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SVETLANKA909090 [29]
3 years ago
6

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 particu

lar 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.
Mathematics
1 answer:
bazaltina [42]3 years ago
8 0

Answer: 4 V

Step-by-step explanation:

The formula for electrical power P is:

P=\frac{V^{2}}{R}

Where:

P=0.5 W is the water heater electrical power

V is he water heater voltage

R=32 \Omega is the electrical resistance

Isolating V:

V=\sqrt{PR}

V=\sqrt{(0.5 W)(32 \Omega)}

Hence:

V=4 V

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