Mechanical Aptitude Basic Electrical Circuits Questions and Answers 3

Question 1

What is the power dissipated by a 100Ω resistor with 2A flowing through it?

Accepted Answer

400W

Answer

200W

Answer

50W

Answer

100W

Question 2

What happens to the brightness of bulbs in a series circuit when one bulb is removed?

Accepted Answer

All remaining bulbs go out

Answer

Remaining bulbs get brighter

Answer

Remaining bulbs get dimmer

Answer

No change in brightness

Question 3

Which type of current periodically reverses its direction of flow?

Accepted Answer

Alternating current (AC)

Answer

Direct current (DC)

Answer

Static current

Answer

Pulsating current

Question 4

A wire's resistance increases when which of the following changes occurs?

Accepted Answer

The wire length increases

Answer

The wire diameter increases

Answer

The wire length decreases

Answer

The wire temperature decreases

Question 5

What instrument is used to measure the voltage across a component in a circuit?

Accepted Answer

Voltmeter

Answer

Ammeter

Answer

Ohmmeter

Answer

Wattmeter

Question 6

In a circuit with a 9V battery and a total resistance of 3Ω, what is the current flowing through the circuit?

Accepted Answer

3A

Answer

27A

Answer

6A

Answer

0.33A