Question

10 µF capacitor in series with an 1 M Ohm resistor is connected across a100 V d. c.

supply. Determine the initial value of charging current.

a. 1mA

b. 0.1 mA

c. 0.01mA

d. 1.00A​

Answer 1

ohms law is used...may be the answer is correst

Answer 2

Answer:

The initial value of the charging current is 0.1mA. i.e.option(b).

Explanation:

We will solve this question through ohms law. Which is given as,

$V=IR$            (1)

Where,

V=potential difference across the resistor

I=current through the resistor

R=resistance of the resistor

From the question we have,

R=1μΩ=1 ×10⁻⁶Ω

V=100v

By substituting the value of V and I in equation (1) we get;

$100=I\times 10^-^6$

$I=\frac{100}{10^-6}=10^-^4=0.1mA$

Hence, the initial value of the charging current is 0.1mA. i.e.option(b).