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The electric power consumed by an electric heater is found to be 500 W per unit time when it is connected to a 250 V source. The current drawn by the
Question

The electric power consumed by an electric heater is found to be 500 W per unit time when it is connected to a 250 V source. The current drawn by the heater per unit time is:

A.

2 A

B.

5 A

C.

0.2 A

D.

0.5 A

Correct option is A

The correct answer is 2 A (Option A).

Explanation:

The relationship between electric power (P), voltage (V), and current (I) is given by:

P=V⋅I

Given:

  1. Power (P) = 500 W
  2. Voltage (V) = 250 V

Calculation:

I=PVI = \frac{P}{V}​​

Substitute the values:

I=500250=2 AI = \frac{500}{250} = 2 \, \text{A}​​

Thus, the current drawn by the heater is 2 A.

Information Booster:

  •  Electric power (P) is the rate at which electrical energy is converted into heat, light, or other forms of energy.
  •    The unit of power is watts (W), and it is related to voltage (V) and current (I) through the formula P=V⋅I.
  •    Voltage (V) is the potential difference that drives current through a circuit.
  • Current (I) is the rate of flow of electric charge and is measured in amperes (A).
  •    This relationship applies to DC circuits and purely resistive AC circuits.

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