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What current would flow between two points in an electric circuit with a potential difference of 120 V and a resistance of 30 ohm?
Wiki User
∙ 13y ago
Potential difference = Current * Resistance
so putting in the values of p.d. and current and finding the value of resistance gives a value of 40 ohms.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoThe equation for this is V=IR where V is the voltage in volts, I is the current in amps and R is the resistance in ohms, so in your case you have 120=I * 30 or I = 120/30 or 4 amps.
Wiki User
∙ 13y agoV=ir
12=i30
12/30=i
0.4a=i
Wiki User
∙ 9y agoYou solve this using Ohm's Law. In this case, divide the voltage by the resistance. The answer is the current in amperes.
Wiki User
∙ 6y agoYou can use Ohm's Law for this. In this case, divide the voltage by the resistance.
Wiki User
∙ 12y agor=v/i
r=30/5=6ohm..........
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