# The internal resistance of the generator is 1 Ohm and EMF is 120 V., determine the current

The internal resistance of the generator is 1 Ohm and EMF is 120 V., determine the current in the circuit if an 11 ohm resistor is connected to the generator

r = 1 ohm.

EMF = 120 V.

R = 11 ohms.

I -?

According to Ohm’s law for a closed circuit, the current I is directly proportional to the electromotive force of the current source EMF and is inversely proportional to the sum of the external resistance of the circuit R and the internal resistance of the current source r: I = EMF / (R + r).

Substitute the data from the condition of the problem: I = 120 V / (11 Ohm + 1 Ohm) = 10 A.

Answer: in the resistor connected to the generator, the current will be I = 10 A.

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