GROL - General Radiotelephone Operator License Electrical Principles and Units Questions and Answers

Question 1

In a direct current (DC) circuit, what is the relationship between voltage, current, and resistance as described by Ohm's Law?

Accepted Answer

Voltage is directly proportional to the current and resistance.

Answer

Current is directly proportional to the voltage and resistance.

Answer

Resistance is directly proportional to the voltage and current.

Answer

Voltage is inversely proportional to the current and resistance.

Question 2

A technician measures a voltage of 24 volts across a resistor with a current of 2 amperes flowing through it. What is the resistance of the component?

Accepted Answer

12 ohms

Answer

48 ohms

Answer

0.083 ohms

Answer

26 ohms

Question 3

Which of the following is the standard unit of measurement for electrical power?

Accepted Answer

Watt

Answer

Volt

Answer

Ampere

Answer

Ohm

Question 4

If three resistors of 10 ohms, 20 ohms, and 30 ohms are connected in a series circuit, what is the total resistance?

Accepted Answer

60 ohms

Answer

5.45 ohms

Answer

10 ohms

Answer

600 ohms

Question 5

What is the total resistance of a circuit with two resistors, 100 ohms and 100 ohms, connected in parallel?

Accepted Answer

50 ohms

Answer

200 ohms

Answer

100 ohms

Answer

0 ohms

Question 6

Which of the following best defines electric current?

Accepted Answer

The flow of electrons in an electric circuit.

Answer

The opposition to the flow of electrons.

Answer

The force that causes electrons to flow.

Answer

The potential energy difference between two points.