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Physics for IGCSE & O level - Electricity (Section 7 - No. 50)

If the voltage in a circuit is doubled and the resistance remains the same, what happens to the power?
The power doubles
The power is halved
The power increases by a factor of four
The power remains the same

Wyjaśnienie

Since P=V^2/R, when voltage doubles, the power increases by a factor of four.

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