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PIT_PIT [208]
3 years ago
5

If the voltage impressed across a circuit is held constant while the resistance is halved, what change occur?

Physics
1 answer:
egoroff_w [7]3 years ago
3 0

Answer:

The current doubles

Explanation:

In a circuit, Ohm's law gives the relationship between voltage, current and resistance:

V=RI

where

V is the voltage

R is the resistance

I is the current

In this problem,

V is held constant

R is halved: R'=\frac{R}{2}

Therefore, the new current is

I'=\frac{V}{R'}=\frac{V}{R/2}=2\frac{V}{R}=2I

So, the current doubles.

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