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# Physics Circuit HELP?

A circuit has a closed switch and a 12.0 V battery. The circuit has a .25 A current through it. Find the resistance of the resistor?

--- Thanks in advance!

### 2 Answers

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- trueproberLv 77 years agoFavorite Answer
Hello M S, we use the expression R = V/I

Given V = 12 V and I=0.25 A

So applying we get R = 48 ohm

- 7 years ago
I believe you use ohms law: V=IR

V=12.0

I=.25

Therefore

12=.25R or

R=12/.25=48A

Hope that helps!

Source(s): Ohm's Law

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