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eduard
2 years ago
12

As more resistors are added in series across a constant voltage source, the power supplied by the source: A) does not change. B)

increases. C) decreases. D) is always zero
Physics
1 answer:
Anon25 [30]2 years ago
4 0

As series resistors are added, the resistance is added directly so the total resistance will be equal to

R_T = R_1+R_2+R_3... R_{\infty}

Since the power is determined as

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

We have there that

P \propto \frac{1}{R}

The power is inversely proportional to the increase in resistance, so it will tend to decrease as more resistors are added in series.

The correct answer is: C.

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