Question

A charge of \(2 \times 10^{-2} \, C\) moves at 30 rev/s in a circle of diameter 80 cm. The current linked with the circuit is :

• A. 0.02 A
• B. 20 A
• C. 0.60 A
• D. 60 A

Hint:

Current in circular motion = charge × frequency.

Answer 1

The Correct Option is C

Concept: Current: \[ I = q \times f \]

Step 1: Given values.
\[ q = 2 \times 10^{-2} \, C, \quad f = 30 \, \text{rev/s} \]

Step 2: Calculate current.
\[ I = qf = 2 \times 10^{-2} \times 30 = 0.6 \, A \]