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 $t=4 s$ ?
(a) $2 \mu A$
(b) $1.5 \mu A$
(c) Zero
(d) $3 \mu A$
Show Answer
Answer:
Correct Answer: 11. 1.5 A from right to left, $1.44 \times 10^{-5} J$
Solution:
- As we know, Current,
$$ I=\frac{d q}{d t} $$
$=$ Slope of $q$ versus $t$ graph
$=$ Zero at $t=4 s$; (as graph is a line parallel to time axis at $t=4 s)$
