In the Ohm's Law equation E = I × R, what does E represent?

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Multiple Choice

In the Ohm's Law equation E = I × R, what does E represent?

Explanation:
E represents the voltage across the element—the electric potential difference that drives the current. In Ohm’s Law, V = I × R, the voltage is the energy per unit charge that pushes charges through the conductor. This is measured in volts, and it’s the quantity you’d read with a voltmeter across that component. For example, if a current of 2 amperes flows through a 4 ohm resistor, the voltage across it is 8 volts (2 × 4). The other terms—current, resistance, and power—describe different properties (the flow of charge, the opposition to flow, and energy per unit time, respectively) and relate to Ohm’s Law in separate ways, but the symbol E in this equation is the voltage.

E represents the voltage across the element—the electric potential difference that drives the current. In Ohm’s Law, V = I × R, the voltage is the energy per unit charge that pushes charges through the conductor. This is measured in volts, and it’s the quantity you’d read with a voltmeter across that component. For example, if a current of 2 amperes flows through a 4 ohm resistor, the voltage across it is 8 volts (2 × 4). The other terms—current, resistance, and power—describe different properties (the flow of charge, the opposition to flow, and energy per unit time, respectively) and relate to Ohm’s Law in separate ways, but the symbol E in this equation is the voltage.

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