AFCT Electronics Information 2

Question 1

What is the unit of measurement for electrical resistance?

Accepted Answer

Ohm

Answer

The ohm is the SI unit of electrical resistance, named after German physicist Georg Simon Ohm.

Question 2

In a series circuit with three resistors of 10, 20, and 30 ohms, what is the total resistance?

Accepted Answer

60 ohms

Answer

In a series circuit, total resistance is the sum of all individual resistances: 10 + 20 + 30 = 60 ohms.

Question 3

What component in a circuit allows current to flow in only one direction?

Accepted Answer

Diode

Answer

A diode is a semiconductor device that allows current to flow in one direction and blocks it in the opposite direction.

Question 4

What does AC stand for in electrical terminology?

Accepted Answer

Alternating Current

Answer

AC stands for Alternating Current, where the flow of electric charge periodically reverses direction.

Question 5

What happens to the brightness of bulbs connected in series when one bulb burns out?

Accepted Answer

All bulbs go out

Answer

In a series circuit, all components share a single current path. If one bulb burns out, the circuit is broken and all bulbs go out.

(AFCT) Armed Forces Classification Test Practice Test