Question

The power dissipated by a resistor of 4 Ω when a current of 5 A passes through it is

Answer 1

Answer:

here ise

formulav=ir where vis pd i is current r is resistance

then given I=5A AND R=4 OHM

BY USING V=IR

V=5×4 =20V

Answer 2

Answer:

The power dissipated by the resistor is 100 Watt.

Explanation:

We will use the following equation to solve this question,

$P=I^2R$     (1)

Where,

P=power dissipated in the resistor

I=the current flowing through the resistor

R=resistance of the resistor

From the question we have,

R=4Ω

I=5Ampere

By substituting the value of current and resistance in equation (1) we get;

$P=(5)^2\times 4$

$P=25\times 4=100Watt$

Hence, the power dissipated by the resistor is 100 Watt.