Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर
JEE Main & Advanced
Physics
Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर
Question Bank
Self Evaluation Test - Current Electricity
question_answer
The amount of charge Q passed in time t through a cross-section of a wire is \[Q=5{{t}^{2}}+3t+1.\] The value of current at time t=5 s is
A)9 A
B)49 A
C)53 A
D)None of these
Correct Answer:
C
Solution :
[c] \[I=\frac{dQ}{dt}=10t+3\] At t=5s, \[I=10\times 5+3=53A\]