Question 1

What is the unit of electrical resistance?

Accepted Answer

Ohm

Answer

Ampere

Answer

Watt

Answer

Volt

Question 2

What is the unit of electric current?

Accepted Answer

Ampere

Answer

Watt

Answer

Ohm

Answer

Volt

Question 3

What is the formula for calculating voltage?

Accepted Answer

V = IR

Answer

V = I/R

Answer

V = I + R

Answer

V = R/I

Question 4

What is the difference between AC and DC current?

Accepted Answer

AC current periodically reverses direction while DC does not

Answer

AC current is only used for small electronics while DC is used for larger power systems

Answer

DC current has a higher voltage than AC current

Answer

AC current flows in one direction while DC periodically reverses direction

Question 5

What is the unit of electric power?

Accepted Answer

Watt

Answer

Volt

Answer

Ohm

Answer

Ampere

Question 6

What is Ohm's law?

Accepted Answer

The current in a circuit is directly proportional to the voltage and inversely proportional to the resistance

Answer

The potential difference across a conductor is directly proportional to the current flowing through it

Answer

The resistance in a circuit is directly proportional to the voltage and inversely proportional to the current

Answer

The voltage in a circuit is directly proportional to the current and resistance

Question 7

What is the unit of electric resistance?

Accepted Answer

Ohm

Answer

Ampere

Answer

Watt

Answer

Volt

Question 8

What is the symbol of electric resistance?

Accepted Answer

Ω

Answer

W

Answer

V

Answer

A

Question 9

What is the formula for Ohm's Law?

Accepted Answer

V=IR

Answer

V=IP

Answer

P=VI

Answer

I=PR

Question 10

What is the resistance of a 5 ohm resistor in parallel with a 10 ohm resistor?

Accepted Answer

3.33 ohms

Answer

15 ohms

Answer

7.5 ohms

Answer

2.5 ohms

Question 11

What is the resistance of a 12 ohm resistor in parallel with a 18 ohm resistor?

Accepted Answer

7.2 ohms

Answer

5.4 ohms

Answer

10.8 ohms

Answer

30 ohms

Question 12

What is the voltage across a 10 ohm resistor if a current of 2 amps is flowing through it?

Accepted Answer

20V

Answer

30V

Answer

5V

Answer

10V

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