The variable representing voltage is

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Multiple Choice

The variable representing voltage is

Explanation:
Voltage is the electric potential difference in a circuit, and the standard symbol for it is V. This symbol distinguishes it from current (I), power (P), and resistance (R), each of which has its own commonly used letter. Ohm’s Law ties these together with V = I × R, showing how voltage relates to current and resistance. For example, if 3 A flows through a 4 Ω resistor, the voltage across it is V = 3 × 4 = 12 V. So V is the correct symbol for voltage.

Voltage is the electric potential difference in a circuit, and the standard symbol for it is V. This symbol distinguishes it from current (I), power (P), and resistance (R), each of which has its own commonly used letter. Ohm’s Law ties these together with V = I × R, showing how voltage relates to current and resistance. For example, if 3 A flows through a 4 Ω resistor, the voltage across it is V = 3 × 4 = 12 V. So V is the correct symbol for voltage.

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