100+ Free Cameroon Baccalauréat Série F2 Practice Questions

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2026 Statistics

Key Facts: Cameroon Baccalauréat Série F2 Exam

10.00 / 20

Minimum Pass Average

Office du Baccalauréat du Cameroun (OBC)

21,000 FCFA

Total Registration Cost (13,000 + 8,000)

OBC / MINESEC Circular, session 2026

Coefficient 15

Combined weight of the two compulsory practicals

OBC Série F2 timetable, session 2026

The Cameroon Baccalauréat Série F2 is the national technical diploma in electronics administered by OBC, requiring a general average ≥ 10/20 across analog electronics, digital logic, microcontrollers, and general STEM subjects.

Sample Cameroon Baccalauréat Série F2 Practice Questions

Try these sample questions to test your Cameroon Baccalauréat Série F2 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1In an ideal operational amplifier (AOP idéal) operating in linear mode with negative feedback, what are the theoretical values for the differential input voltage ($\varepsilon = V^+ - V^-$) and input bias currents ($I^+, I^-$)?

A.ε = 0 V (virtual short-circuit / court-circuit virtuel) and I^+ = I^- = 0 A (infinite input impedance)

B.ε = +15 V and I^+ = I^- = 10 mA

C.ε = 0 V and I^+ = I^- = infinite

D.ε = V_sat and I^+ = I^- = 1 mA

Explanation: An ideal op-amp has infinite open-loop voltage gain ($A_{vd} \to \infty$), meaning negative feedback drives the differential input voltage $\varepsilon = V^+ - V^- = 0\text{ V}$ ($V^+ = V^-$). It also has infinite input impedance ($R_{in} \to \infty$), so no current flows into either input terminal ($I^+ = I^- = 0\text{ A}$).

2In an inverting op-amp amplifier circuit with input resistor $R_1 = 10\text{ k}\Omega$ and feedback resistor $R_2 = 100\text{ k}\Omega$, what is the closed-loop voltage gain $A_v = \frac{V_{out}}{V_{in}}$?

A.-10

B.+10

C.-11

D.+11

Explanation: For an inverting op-amp configuration, the closed-loop voltage gain is $A_v = -\frac{R_2}{R_1} = -\frac{100\text{ k}\Omega}{10\text{ k}\Omega} = -10$.

3A non-inverting op-amp amplifier has $R_1 = 4.7\text{ k}\Omega$ connected from the inverting input to ground and a feedback resistor $R_f = 47\text{ k}\Omega$. If the input signal is $V_{in} = 0.2\text{ V}$, what is the output voltage $V_{out}$?

A.2.2 V

B.2.0 V

C.-2.0 V

D.-2.2 V

Explanation: The gain of a non-inverting amplifier is $A_v = 1 + \frac{R_f}{R_1} = 1 + \frac{47\text{ k}\Omega}{4.7\text{ k}\Omega} = 1 + 10 = 11$. Therefore, $V_{out} = A_v \cdot V_{in} = 11 \times 0.2\text{ V} = 2.2\text{ V}$.

4What is the primary function of a voltage follower (suiveur de tension / buffer amplifier) with $A_v = 1$ in an electronic circuit?

A.Impedance matching: provides very high input impedance and very low output impedance to prevent signal attenuation from loading effects

B.Voltage amplification to boost millivolt signals to 100 volts

C.Phase shifting by exactly 90 degrees to generate quadrature signals

D.Rectifying AC signals into pulsating DC current

Explanation: A voltage follower ($V_{out} = V_{in}$) has unity voltage gain but provides impedance isolation (adaptation d'impédance): its near-infinite input impedance draws virtually no current from a high-impedance source, while its near-zero output impedance can drive low-impedance loads without voltage drop.

5In an op-amp integrator circuit (montage intégrateur) with input resistor $R$ and feedback capacitor $C$, what is the output voltage $v_{out}(t)$ for an input voltage $v_{in}(t)$?

A.v_{out}(t) = -\frac{1}{R C} \int v_{in}(t) \, dt + V_0

B.v_{out}(t) = -R C \frac{dv_{in}(t)}{dt}

C.v_{out}(t) = -\frac{R}{C} v_{in}(t)

D.v_{out}(t) = +\frac{1}{R C} \int v_{in}(t) \, dt

Explanation: The virtual ground at the inverting terminal gives $i(t) = \frac{v_{in}(t)}{R}$. All current flows into the feedback capacitor: $i(t) = -C \frac{dv_{out}(t)}{dt} \implies \frac{dv_{out}(t)}{dt} = -\frac{v_{in}(t)}{R C} \implies v_{out}(t) = -\frac{1}{R C} \int v_{in}(t) \, dt + V_0$.

6What is the cutoff frequency $f_c$ (at -3 dB) of a first-order passive RC low-pass filter with $R = 10\text{ k}\Omega$ and $C = 15.9\text{ nF}$?

A.1000 Hz (1 kHz)

B.100 Hz

C.6283 Hz

D.159 Hz

Explanation: The cutoff frequency is $f_c = \frac{1}{2\pi \cdot R \cdot C}$. $R \cdot C = 10000\text{ }\Omega \times 15.9 \times 10^{-9}\text{ F} = 1.59 \times 10^{-4}\text{ s}$. $f_c = \frac{1}{2 \times 3.14159 \times 1.59 \times 10^{-4}} = \frac{1}{9.99026 \times 10^{-4}} \approx 1000\text{ Hz} = 1\text{ kHz}$.

7A Schmitt trigger (comparateur à hystérésis non inverseur) has switching thresholds at $V_{T+} = +2\text{ V}$ and $V_{T-} = -2\text{ V}$. What is the hysteresis voltage width $\Delta V_H$?

A.4 V

B.2 V

C.0 V

D.-4 V

Explanation: The hysteresis width is the difference between upper and lower threshold switching voltages: $\Delta V_H = V_{T+} - V_{T-} = 2\text{ V} - (-2\text{ V}) = 4\text{ V}$.

8What is the Barkhausen oscillation criterion (condition d'oscillation de Barkhausen) for a linear feedback oscillator to maintain sustained sinusoidal oscillations at frequency $f_0$?

A.Loop gain magnitude |A·β| = 1 and total loop phase shift ∠(A·β) = 0° (or 360° / 2kπ)

B.|A·β| = 0 and phase shift = 90°

C.|A·β| < 0.5 and phase shift = 180°

D.|A·β| > 100 and phase shift = 45°

Explanation: The Barkhausen criteria require: 1) The loop gain magnitude must be unity ($|A(j\omega_0) \cdot \beta(j\omega_0)| = 1$) to maintain constant amplitude; 2) The total phase shift around the feedback loop must be zero or an integer multiple of $360^\circ$ ($\angle (A\beta) = 2k\pi$) for positive reinforcement.

9In an NPN Bipolar Junction Transistor (BJT) operating in the active linear amplification region, what are the bias conditions for the two internal PN junctions?

A.Base-Emitter (BE) junction is forward-biased (~0.7 V) and Base-Collector (BC) junction is reverse-biased

B.Both BE and BC junctions are forward-biased (saturation mode)

C.Both BE and BC junctions are reverse-biased (cutoff mode)

D.BE junction is reverse-biased and BC junction is forward-biased (inverted mode)

Explanation: Active linear mode requires the base-emitter junction to be forward-biased ($V_{BE} \approx 0.7\text{ V}$ for silicon) to inject electrons into the base, and the base-collector junction to be reverse-biased ($V_{BC} < 0$, so $V_{CE} > V_{CE,sat}$) to sweep electrons across into the collector.

10An NPN transistor with common-emitter DC current gain $\beta = 100$ has a base current $I_B = 50\text{ }\mu\text{A}$. What is the collector current $I_C$ in active linear mode?

A.5.0 mA

B.0.50 mA

C.50 mA

D.2.0 mA

Explanation: In the active region, $I_C = \beta \cdot I_B = 100 \times 50\text{ }\mu\text{A} = 5000\text{ }\mu\text{A} = 5.0\text{ mA}$.

About the Cameroon Baccalauréat Série F2 Exam

The Cameroon Baccalauréat Technique Série F2 (Électronique) is the national technical secondary school leaving diploma for students specializing in electronics, digital systems, telecommunications hardware, and embedded technologies. Administered by the Office du Baccalauréat du Cameroun (OBC) under the Ministry of Secondary Education (MINESEC), Série F2 prepares graduates for technical careers and selective entrance competitions into top engineering schools (ENSPY, ENSET Douala, SUP'PTIC, IUT). This 100-question practice bank covers analog amplifiers, digital logic, microcontrollers, circuit analysis, and signal processing. Format note: the official examination is written and practical in French; this bank is an English-language MCQ study adaptation designed to build technical problem-solving skills.

Assessment

The national examination is sat in two phases: compulsory written papers, then compulsory practicals for candidates declared admissible. Per the OBC session 2026 timetable for Série F2, the written papers are Électronique (4h, coef 3), Étude de projet (5h, coef 3), Technologie des Microprocesseurs et Ordinateurs (3h, coef 3), Mathématiques (3h, coef 3), Sciences Physiques (3h, coef 3), Schéma et Technologie — Électronique (3h, coef 2), Français/Philosophie (3h, coef 2), Anglais (2h, coef 2), Éducation à la Citoyenneté et à la Morale (2h, coef 2), Informatique écrite (1h30, coef 2), EPS écrite (2h, coef 2), Histoire ou Géographie (2h, coef 1) and Mécanique (2h, coef 1). The compulsory practicals are Réalisation d'un projet (10h, coef 8) and Pratique des Microprocesseurs et Ordinateurs (5h, coef 7), together carrying 15 of the 44 total coefficients.

Time Limit

Written papers spread over five days (21, 22, 25, 26 and 28 May in the 2026 session), ranging from 1h30 to 5h each, plus 15 hours of compulsory practicals

Passing Score

Moyenne générale of at least 10.00/20 across all coefficient-weighted papers

Exam Fee

21,000 FCFA (Office du Baccalauréat du Cameroun (OBC))

Cameroon Baccalauréat Série F2 Exam Content Outline

25%

Électronique Analogique & Amplificateurs Opérationnels

Linear and non-linear op-amp circuits, inverting/non-inverting amplifiers, differential stages, active filters (Butterworth, Sallen-Key), sinusoidal and relaxation oscillators (Wien bridge, Schmitt trigger, 555 timer), and bipolar/MOSFET transistor amplifiers.

25%

Électronique Numérique, Logique Combinatoire & Séquentielle

Boolean algebra, Karnaugh map minimization, multiplexers, demultiplexers, decoders, latches, flip-flops (SR, D, JK, T), synchronous and asynchronous modulo-N counters, shift registers, and analog-to-digital (ADC) / digital-to-analog (DAC) converters.

20%

Systèmes Électroniques, Microcontrôleurs & Traitement du Signal

Microcontroller internal architecture (ALU, registers, program/data memory), GPIO configuration, timers, interrupt handling, pulse-width modulation (PWM), serial communication protocols (UART, SPI, I2C), and sensor signal conditioning circuits.

15%

Schéma Électronique, CAO & Technologie des Composants

Circuit schematic analysis, PCB routing rules, component specifications (E12/E24 series, tolerances), regulated power supplies (linear voltage regulators 78xx/79xx, LM317, switch-mode power supplies SMPS), and fault diagnostics.

15%

Mathématiques Appliquées & Physique Ondulatoire

Complex numbers in AC circuit analysis, transfer functions H(jω), Bode magnitude and phase plotting, resonance frequency and bandwidth calculation, Fourier series basics, and electromagnetic wave propagation.

How to Pass the Cameroon Baccalauréat Série F2 Exam

What You Need to Know

Passing score: Moyenne générale of at least 10.00/20 across all coefficient-weighted papers
Assessment: The national examination is sat in two phases: compulsory written papers, then compulsory practicals for candidates declared admissible. Per the OBC session 2026 timetable for Série F2, the written papers are Électronique (4h, coef 3), Étude de projet (5h, coef 3), Technologie des Microprocesseurs et Ordinateurs (3h, coef 3), Mathématiques (3h, coef 3), Sciences Physiques (3h, coef 3), Schéma et Technologie — Électronique (3h, coef 2), Français/Philosophie (3h, coef 2), Anglais (2h, coef 2), Éducation à la Citoyenneté et à la Morale (2h, coef 2), Informatique écrite (1h30, coef 2), EPS écrite (2h, coef 2), Histoire ou Géographie (2h, coef 1) and Mécanique (2h, coef 1). The compulsory practicals are Réalisation d'un projet (10h, coef 8) and Pratique des Microprocesseurs et Ordinateurs (5h, coef 7), together carrying 15 of the 44 total coefficients.
Time limit: Written papers spread over five days (21, 22, 25, 26 and 28 May in the 2026 session), ranging from 1h30 to 5h each, plus 15 hours of compulsory practicals
Exam fee: 21,000 FCFA

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Frequently Asked Questions

What is the Cameroon Baccalauréat Série F2?

The Baccalauréat Série F2 is the official Cameroonian technical high school leaving credential specializing in Électronique (Electronic Engineering and Systems). Administered by the OBC under MINESEC, it prepares students for higher engineering faculties (ENSET, SUP'PTIC, IUT, ENSPY) and electronic industry careers.

What subjects carry the highest weighting in Baccalauréat F2?

On the OBC session 2026 timetable the heaviest components are the two compulsory practicals: Réalisation d'un projet (coefficient 8) and Pratique des Microprocesseurs et Ordinateurs (coefficient 7). Among the written papers, Électronique, Étude de projet, Technologie des Microprocesseurs et Ordinateurs, Mathématiques and Sciences Physiques each carry coefficient 3.

What is the passing requirement for the Baccalauréat F2?

Candidates must achieve an overall weighted average (Moyenne générale) of at least 10.00/20 across all written, technical, and laboratory examinations. Candidates who score between 8.00 and 9.99/20 may be considered for deliberation based on their school academic record (livret scolaire).

How does this English-language MCQ practice bank help prepare for the French Bac F2?

This practice bank translates and adapts the core circuit equations, op-amp formulas, Karnaugh map simplifications, transfer functions, and microcontroller configurations into structured multiple-choice problems, reinforcing the technical and analytical skills tested on the official OBC examination.

100+ Free Cameroon Baccalauréat Série F2 Practice Questions

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