Question

A current of 6.0 amps passes through a motor that has a resistance of 5.0 ohms. calculate the power

Answer 1

Answer;

180 watts

Explanation;

• Power represents the work done per unit time.
• Thus; power = work done/time
• Power is measured in J/s or watts.
• Power = Heat energy/time
• But heat energy = I²Rt, where I is the current, R is the resistance, and t is time in second.

Thus, power = I²Rt/t

= I²R

Therefore; power = 6²× 5

= 180 Watts

Answer 2

The power along the circuit is calculated through the equation,
P = I x R²
where P is power in Watts, I is current in ampere, and R is resistance is Ohms. Substituting the known values from the given,
P = (6.0 A) x (5 ohms)² = 150 Watts
Thus, the power generated in the circuit is equal to 150 W.