An electric ceiling fan operates on a 220\,\text{V} mains supply and draws a steady curren… — JAMB UTME

An electric ceiling fan operates on a $220\,\text{V}$ mains supply and draws a steady current of $0.5\,\text{A}$ . What is the electrical power rating of the fan?

$110\,\text{W}$ Answer
B
$440\,\text{W}$
C
$220.5\,\text{W}$
D
$110\,\text{J}$

Answer

The electrical power rating of the fan is

110\,\text{W}

Electrical power

P

delivered to a circuit element is given by

P = VI

, where

V

is potential difference and

I

is current. Substituting

220\,\text{V}

and

0.5\,\text{A}

gives

110\,\text{W}

Step-by-Step Solution

Identify the given physical quantities

Voltage

V = 220\,\text{V}

and current

I = 0.5\,\text{A}

These are the basic electrical parameters required to calculate power.

Apply the electrical power formula

P = V \times I

Electrical power is defined as the product of potential difference across a device and current flowing through it.

Substitute values and compute the power

P = 220\,\text{V} \times 0.5\,\text{A} = 110\,\text{W}

Multiplying potential difference by current yields the rate of energy conversion in Watts.

Key Concept

Electrical Power (

P = VI

)

Estimated Time:45s

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Answer

Step-by-Step Solution

Key Concept

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