16. What is the voltage of a circuit if the resistance is 10Ω and the current is 5A?
a) 50V
b) 2V
c) 15V
d) 0.5V
Answer: a) 50V
17. Which of the following is an example of a closed circuit?
a) A broken wire
b) An open switch
c) A working light bulb
d) A disconnected battery
Answer: c) A working light bulb
18. What is the formula to calculate electric energy?
a) E = V/I
b) E = P/V
c) E = V x I
d) E = W/V
Answer: d) E = W/V
19. What is the SI unit of electric energy?
a) Ampere
b) Ohm
c) Volt
d) Joule
Answer: d) Joule
20. What is the resistance of a circuit if the voltage is 30V and the current is 3A?
a) 90Ω
b) 10Ω
c) 27Ω
d) 33Ω
Answer: b) 10Ω
