# Basic Concepts MCQ’s

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?

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:

a) 30 V

b) 25 V

c) 20 V

d) 15 V

8. In the circuit the dependent source __________

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