Question

You are charging a capacitor C in an RC circuit using a 100 V battery and a 100Ohm resistor. At one instant the capacitor has a voltage of 60 V. What is the current in the circuit at this moment?

A. 0.5 A
B. 0.1 A
C. 0.9 A
D. 0.7 A
E. 0.8 A
F. 0.3 A
G. 0.4 A
H. 0.6 A
I. 1.0 A
J. 0.2 A

Answer 1

The current in the RC circuit when the capacitor has a voltage of 60V, using a 100V battery and a 100Ohm resistor, is 0.4 A.

Step-by-step explanation:

The question relates to an RC circuit with a voltage supply and a resistor. When the capacitor is at 60V and the voltage supply from the battery is 100V, the potential difference across the resistor is 100V - 60V = 40V.

Using Ohm's law (V = IR), where V is the potential difference, I is the current, and R is the resistance, we can solve for the current I:

I = V / R

Substituting the given values:

I = 40V / 100Ω = 0.4 A

So the current in the circuit at this moment is 0.4 A.