Basic Concepts MCQ’s

Electronic Devices & Circuits Electronics & Communication Engineering

This set of Electronic Devices & Circuits Multiple Choice Questions & Answers (MCQs) focuses on “Basic Concepts”.

1. A lightning bolt carrying 15,000 A lasts for 100 s. If the lightning strikes an airplane flying at 2 km, the charge deposited on the plane is _________
a) 13.33 C
b) 75 C
c) 1500 C
d) 1.5 C

2. If 120 C of charge passes through an electric conductor in 60 sec, the current in the conductor is _________
a) 0.5 A
b) 2 A
c) 3.33 mA
d) 0.3 mA

3. A solid copper sphere, 10 cm in diameter is deprived of 1020 electrons by a charging scheme. The charge on the sphere is _________
a) 160.2 C
b) -160.2 C
c) 16.02 C
d) -16.02 C

4. The energy required to move 120 coulomb through 3 V is _________
a) 25 mJ
b) 360 J
c) 40 J
d) 2.78 mJ

5. What will be the value of Req in the following Circuit?

electronic-devices-circuits-questions-answers-basic-concepts-q6

a) 11.86 ohm
b) 10 ohm
c) 25 ohm
d) 11.18 ohm

6. Twelve 6 ohm resistors are used to form an edge of a cube. The resistance between two diagonally opposite corner of the cube (in ohm) is ________
a) 5/6
b) 6/5
c) 5
d) 6

7. Consider the circuit graph shown in figure below. Each branch of circuit graph represent a circuit element. The value of voltage V1 is:

electronic-devices-circuits-questions-answers-basic-concepts-q5

a) 30 V
b) 25 V
c) 20 V
d) 15 V

8. In the circuit the dependent source __________

electronic-devices-circuits-questions-answers-basic-concepts-q7

a) supplies 16 W
b) absorbs 16 W
c) supplies 32 W
d) absorbs 32 W

9. The energy required to charge a 10 µF capacitor to 100 V is ________
a) 0.1 J
b) 0.05 J
c) 5 x 10(-9) J
d) 10 x 10(-9) J

10. A capacitor is charged by a constant current of 2 mA and results in a voltage increase of 12 V in a 10 sec interval. The value of capacitance is ________
a) 0.75 mF
b) 1.33 mF
c) 0.6 mF
d) 1.67 mF

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