AFCT Electronics: Circuits and Schematics 2

Question 1

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

Accepted Answer

60 ohms

Answer

5.45 ohms

Answer

20 ohms

Answer

180 ohms

Question 2

What does a dashed line represent on a standard electrical schematic?

Accepted Answer

A mechanical linkage or connection between components

Answer

A ground connection

Answer

A shielded or hidden wire

Answer

A high-voltage power line

Question 3

According to Kirchhoff's Current Law, what happens at a junction in an electrical circuit?

Accepted Answer

The sum of currents entering the junction equals the sum of currents leaving it

Answer

Voltage is equal across all branches

Answer

Resistance increases at every junction

Answer

Power is equally distributed among all branches

Question 4

On a schematic diagram, what does a zigzag line symbol typically represent?

Accepted Answer

A resistor

Answer

An inductor

Answer

A capacitor

Answer

A diode

Question 5

What is the total resistance of two 100-ohm resistors connected in parallel?

Accepted Answer

50 ohms

Answer

200 ohms

Answer

100 ohms

Answer

25 ohms

Question 6

What is the purpose of a fuse in an electrical circuit?

Accepted Answer

To protect the circuit by melting and opening the circuit when current exceeds a safe level

Answer

To amplify current flow

Answer

To store energy for later use

Answer

To convert AC to DC power