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Concepts Of Physics MCQ Edition [Volume 2]

Exam: Concepts Of Physics MCQ Edition [Volume 2]
Subject: Physics
Chapter: Electric Current in Conductors

Concepts Of Physics MCQ Edition [Volume 2] · Physics · Electric Current in Conductors

A capacitor with a capacitance of 8.0 is wired to a battery of emf...

A capacitor with a capacitance of

8.0 \mu\text{F}

is wired to a battery of emf

6.0 \text{ V}

via a resistance of

24 \Omega

. Determine the current in the circuit immediately after the connections are made.

Options

A $0 \text{ A}$
B $0.09 \text{ A}$
C $4.0 \text{ A}$
D $0.25 \text{ A}$

Correct answer

D. $0.25 \text{ A}$

Step-by-step solution

Immediately after the connections are made, at

t = 0

, the uncharged capacitor acts as a short circuit.

The initial current in the circuit is limited only by the resistance.

The initial current

I_0

is given by:

I_0 = \dfrac{V}{R}

Substituting the given values:

I_0 = \dfrac{6.0}{24} = 0.25 \text{ A}

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