Select the correct answer from each drop-down menu. Rewrite the formula to find voltage. The formula for electrical power (P, in watts) is where V is the voltage in volts and R is the resistance in ohms. For a particular brand of water heater, R is 32 ohms and P is 0.5 watts. The formula to find V is, and the voltage at which the heater operates is volts.

Question

Mathematics

Mariah Moody

2 October, 13:12

Select the correct answer from each drop-down menu. Rewrite the formula to find voltage. The formula for electrical power (P, in watts) is where V is the voltage in volts and R is the resistance in ohms. For a particular brand of water heater, R is 32 ohms and P is 0.5 watts. The formula to find V is, and the voltage at which the heater operates is volts.

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Answers (1)

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Mcdonald · Answer 1

V = 4 volt

Step-by-step explanation:

Given: Electrical power (w) P = 0.5 watt and resistance R (Ω) R = 32 ohm

Voltage V = ? (volt)

Formula for calculating electrical power is:

P = V² / R = > V² = P · R = > V) √P · R = √0.5 · 32 = √16 = 4 volt

V = 4 volt

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