Amazon Maintenance Technician: Math Ohm's Law 2

Question 1

Using Ohm's Law, if voltage is 120V and resistance is 40Ω, what is the current?

Accepted Answer

3A

Answer

2A

Answer

4A

Answer

5A

Question 2

A circuit has a current of 5A and resistance of 24Ω. What is the voltage?

Accepted Answer

120V

Answer

100V

Answer

110V

Answer

130V

Question 3

The voltage across a resistor is 60V and the current through it is 2A. What is the resistance?

Accepted Answer

30Ω

Answer

25Ω

Answer

28Ω

Answer

32Ω

Question 4

Three resistors of 10Ω, 20Ω, and 30Ω are connected in series. What is the total resistance?

Accepted Answer

60Ω

Answer

50Ω

Answer

55Ω

Answer

65Ω

Question 5

A motor draws 15A from a 240V supply. What is the power consumed?

Accepted Answer

3,600W

Answer

3,200W

Answer

3,400W

Answer

3,800W

Question 6

A resistor has a rated power of 10W and a resistance of 40Ω. What is the maximum safe voltage across it?

Accepted Answer

20V

Answer

16V

Answer

18V

Answer

22V