Question

Which of the following terms does not represent Electric Power in a Circuit?

• 1.I2R
• 2.IR2
• 3.VI
• 4.V2/R
Option 2:IR2
Solution

The term IR2 does not represent electric power in a circuit. IR2 is not a circuit's electrical power source. The pace at which electrical energy is transported across an electric circuit, in units of time, is known as electric power.

Important Formulas of Electric Power in a Circuit

Using Ohm's law equation V = I × R

Where,

V is the Potential difference

R is the Resistance

I is the Current

Power:

P= V x I

also,

P= I R as V=I x R

P=V /R as I=V/R

Uses of Electricity

• Entertainment - To watch TV
• Engineering - Construction of structures and buildings
• Healthcare - surgeries
• Commercial - running of heavy machines requires electricity
• Transport and Communication - power is required in airline travel
• Outdoors - streetlights
• Household - microwave, refrigerator etc
• Space - probes and satellites
• Office - lifts, lights, AC etc
• Fuel - electric vehicle

Summary:

Which of the following terms does not represent electric power in a circuit?

Electricity in a circuit is not represented by the term IR2. Not the electrical power supply of a circuit, but IR2. Electric power is the rate, measured in units of time, at which electrical energy moves across an electric circuit.

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