Electric Circuits(Engineering > Electrical Engineering ) Questions and Answers
Question 1. The resistivity of the conductor depends on
none of these.
type of material.
area of the conductor.
length of the conductor.
Explanation:-
Answer: Option B. -> type of material.
Question 2. A capacitor carries a charge of 0.1 C at 5 V. Its capacitance is
0.05 F
0.2 F
0.5 F
0.02 F
Explanation:-
Answer: Option D. -> 0.02 F
Question 3. If 1 A current flows in a circuit, the number of electrons flowing through this circuit is
1.6 × 10 - 19
0.625 × 10 - 19
1.6 × 1019
0.625 × 1019
Explanation:-
Answer: Option D. -> 0.625 × 1019
Question 4. How many coulombs of charge flow through a circuit carrying a current of 10 A in 1 minute?
60
600
1200
10
Explanation:-
Answer: Option B. -> 600
Question 5. The resistance of a conductor of diameter d and length l is R Ω. If the diameter of the conductor is halved and its length is doubled, the resistance will be
8R Ω
4R Ω
R Ω
2R Ω
Explanation:-
Answer: Option A. -> 8R Ω
Question 6. Five capacitors each of 5 µF are connected in series, the equivalent capacitance of the system will be
25 µF
1 µF
10 µF
5 µF
Explanation:-
Answer: Option B. -> 1 µF
Question 7. 1 F is theoretically equal to
ratio of 1 C to 1 V
1 ohm of resistance
ratio of 1 V to 1 C
none of these
Explanation:-
Answer: Option A. -> ratio of 1 C to 1 V
Question 8. The unit of resistivity is
Ω / metre.
Ω / m².
Ω.
Ω - metre.
Explanation:-
Answer: Option D. -> Ω - metre.
Question 9. Four capacitors each of 40 µF are connected in parallel, the equivalent capacitance of the system will be
10 µF
160 µF
5 µF
40 µF
Explanation:-
Answer: Option B. -> 160 µF
Question 10. To obtain a high value of capacitance, the permittivity of dielectric medium should be
