Power Problems In Physics -Multiple Choice Questions Quiz

Interactive MCQs on “Power Problems In Physics”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: What is the SI unit of power?

(a) Joule (J)
(b) Watt (W)
(c) Newton (N)
(d) Pascal (P

Question 2: A machine does 2000 J of work in 10 seconds. What is the power output of the machine?

(a) 200 W
(b) 2000 W
(c) 20 W
(d) 2 W

Question 3: A motor lifts a load of 500 N to a height of 4 meters in 5 seconds. What is the power supplied by the motor?

(a) 20 W
(b) 100 W
(c) 500 W
(d) 2000 W

Question 4: A light bulb consumes 60 J of electrical energy in 1 second. What is the power rating of the bulb?

(a) 60 W
(b) 120 W
(c) 30 W
(d) 0.0167 W

Question 5: A car engine delivers 1500 J of useful work while consuming 2000 J of fuel energy in 10 seconds. What is the efficiency of the engine?

(a) 60%
(b) 75%
(c) 85%
(d) 100%

Question 6: A pump can lift 300 kg of water to a height of 10 meters in 20 seconds. What is the power of the pump?

(a) 150 W
(b) 500 W
(c) 1500 W
(d) 3000 W

Question 7: A motor lifts a load of 1000 N to a height of 5 meters in 2 seconds. What is the average power required to perform this task?

(a) 250 W
(b) 500 W
(c) 1000 W
(d) 2500 W

Question 8: A machine does 400 J of work in 20 seconds. What is the power output of the machine?

(a) 20 W
(b) 40 W
(c) 60 W
(d) 80 W

Question 9: A water pump can lift 200 liters of water to a height of 10 meters in 1 minute. What is the power of the pump in kilowatts (kW)?

(a) 3 kW
(b) 20 kW
(c) 30 kW
(d) 50 kW

Question 10: A motor lifts a load of 500 N to a height of 8 meters in 4 seconds. What is the power supplied by the motor?

(a) 50 W
(b) 100 W
(c) 125 W
(d) 200 W