Electrostatics 5 Question 10

11. The charge on a capacitor plate in a circuit as a function of time is shown in the figure.

(Main 2019, 12 Jan II)

What is the value of current at t=4s ?

(a) 2μA

(b) 1.5μA

(c) Zero

(d) 3μA

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Answer:

Correct Answer: 11. 1.5 A from right to left, 1.44×105J

Solution:

  1. As we know, Current,

I=dqdt

= Slope of q versus t graph

= Zero at t=4s; (as graph is a line parallel to time axis at t=4s)



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