Clover Learning Radiography Image Production Practice Test

Question: 1 / 400

What is the resistance of a circuit with a current of 30 amps and a voltage of 690?

23

To determine the resistance in a circuit, you can use Ohm's Law, which states that Resistance (R) is calculated by dividing Voltage (V) by Current (I). The formula can be expressed as R = V/I. In this case, the voltage is 690 volts, and the current is 30 amps.

Applying the values to the formula:

R = 690 V / 30 A = 23 ohms

This calculation shows that the resistance of the circuit is indeed 23 ohms, which corresponds to the answer provided. Understanding this relationship through Ohm's Law is fundamental in electrical engineering and radiography, as it helps in analyzing circuits and ensuring that equipment operates efficiently and safely. The other possibilities would yield different resistance values and do not align with the application of Ohm’s Law given the specific current and voltage provided.

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