What is the electrical power consumed by a circuit if a current of 4 A flows through a resistance of 5 kΩ? 

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SSC JE Electrical 4 Dec 2023 Official Paper II
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  1. 800 W
  2. 800 kW
  3. 80 kW
  4. 8000 W

Answer (Detailed Solution Below)

Option 3 : 80 kW
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Detailed Solution

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Concept:

Power dissipated by a resistor is given by

\(P = \frac{{{V^2}}}{R} = {I^2}R = VI\)

V = Voltage applied across the resistor

I = Current flowing through the resistor

R = Resistance

Calculation:

Given I = 4 A

R = 5 kΩ

P = 42 ×5 = 80 kW

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