An electric heater is constructed by applying a potential difference of 110 V across a wire with a resistance of 5.0 $\Omega$.What is the power rating of the heater?
A)2.0 kW
B)2.4 kW
C)1.7 kW
D)1.5 kW
E)60 kW

Question

Quizplus · Accepted Answer

The power rating of the electric heater can be calculated using the formula:

Power (P) = (Voltage)^2 / Resistance

Substituting the given values, we get:

P = (110 V)^2 / 5.0 Ω
P = 2420 W
P = 2.4 kW

Therefore, the power rating of the heater is 2.4 kW, which is option B.

An Electric Heater Is Constructed by Applying a Potential Difference Ω\OmegaΩ

An Electric Heater Is Constructed by Applying a Potential Difference $\Omega$