What is the unit used to express the quantity of electrical pressure?

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Study for the Con Edison Basic Electric Test. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

What is the unit used to express the quantity of electrical pressure?

Explanation:
Electrical pressure is the push that drives current through a circuit, and its unit is the volt. A volt represents the potential difference that would move one ampere of current through one ohm of resistance. This ties directly to Ohm’s Law, V = I × R, which links voltage (pressure), current, and resistance. So the volt is the unit for electrical pressure. The other units have different roles: the ampere measures current, the ohm measures resistance, and the watt measures power (voltage times current). For example, a 12-volt source across a 6-ohm resistor yields 2 amperes of current and 24 watts of power.

Electrical pressure is the push that drives current through a circuit, and its unit is the volt. A volt represents the potential difference that would move one ampere of current through one ohm of resistance. This ties directly to Ohm’s Law, V = I × R, which links voltage (pressure), current, and resistance. So the volt is the unit for electrical pressure. The other units have different roles: the ampere measures current, the ohm measures resistance, and the watt measures power (voltage times current). For example, a 12-volt source across a 6-ohm resistor yields 2 amperes of current and 24 watts of power.

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