The maximum power dissipated by a 100Ω resistor in a circuit is 4W. Calculate the voltage across the resistor.

A. 10V

B. 20V

C. 25V

D. 400V

Correct Answer: Option B

**B. 20V**

Explanation

V^2=PR

=V =√4 ×100

= 20V

The maximum power dissipated by a 100Ω resistor in a circuit is 4W. Calculate the voltage across the resistor.

A. 10V

B. 20V

C. 25V

D. 400V

Correct Answer: Option B

**B. 20V**

Explanation

V^2=PR

=V =√4 ×100

= 20V

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