OAR OAR Mechanical Comprehension: Electricity 3

Question 1

In a series circuit with a 12V source and three equal 4Ω resistors, what is the voltage drop across each resistor?

Accepted Answer

4V

Answer

12V

Answer

3V

Answer

1V

Question 2

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

Accepted Answer

Protect against excessive current

Answer

Increase voltage

Answer

Store electrical energy

Answer

Reduce resistance

Question 3

Two identical 10Ω resistors are connected in parallel. What is the combined resistance?

Accepted Answer

5Ω

Answer

20Ω

Answer

10Ω

Answer

2.5Ω

Question 4

What unit measures electrical charge?

Accepted Answer

Coulomb

Answer

Ampere

Answer

Volt

Answer

Watt

Question 5

A transformer has 200 primary turns and 50 secondary turns. If the primary voltage is 120V, what is the secondary voltage?

Accepted Answer

30V

Answer

480V

Answer

60V

Answer

15V

Question 6

What type of electricity is produced by a battery?

Accepted Answer

Direct current (DC)

Answer

Alternating current (AC)

Answer

Static electricity

Answer

Pulsed AC

Question 7

Which component opposes changes in current in an AC circuit?

Accepted Answer

Inductor

Answer

Resistor

Answer

Capacitor

Answer

Diode