Networks(Engineering > Electronics And Communication Engineering ) Questions and Answers
Question 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
13.33 µC
75 C
1500 µC
1.5 C
Explanation:-
Answer: Option D. -> 1.5 C
ΔQ = i * Δt = 15000 * 100 µ = 1.5C
Question 2. In the circuit of fig P1.1.6 a charge of 600 C is delivered to the 100 V source in a 1 minute. The value of v1 must be
240 V
120 V
60 V
30 V
Explanation:-
Answer: Option A. -> 240 V
In order for 600 C charge to be delivered to the 100 V source, the current must be anticlockwise. i = dQ / dt = 600/10 = 60 Applying KVL we get v1 + 60 - 100 = 10 * 20 or v1 = 240 V