The voltage in the section of the circuit is 120 V. The resistance of the resistor is 240 Ohm. Determine the amperage in the circuit.

Given:

U = 120 Volts – voltage at a certain section of the circuit;

R = 240 Ohm is the resistance of the resistor in this section.

It is required to calculate I (Ampere) – the magnitude of the current in this section of the circuit.

To determine the magnitude of the current strength, you must use the following formula:

U = I * R, from here we get that:

I = U / R = 120/240 = 12/24 = 1/2 = 0.5 Ampere (500 mA).

Answer: the current in the section of the circuit is 0.5 Amperes (500 mA).