Work, Energy and Power MCQ question and answer with solution

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Each section contains 100 MCQs on Work, Energy and Power .

Energy possessed by a body due to its motion is known by what name?

A) Initial energy B) Final energy C) Kinetic energy D) Potential energy

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Falling coconut has-

A) Nuclear energy B) Sound energy C) Kinetic energy D) Chemical energy

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Consider the following statements.
1. There is no net moment on a body which is in equilibrium.
2. The momentum of a body is always conserved.
3. The kinetic energy of an object is always conserved.
Which of the statements (s) given above is/are correct?

A) Only 1 B) 2 and 3 C) 1 and 2 D) All of the above

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

If a man do 'W' work in 't' time, then his power 'P' will be-

A) t - W B) t × W C) $$\frac{W}{t}$$ D) $$\frac{t}{W}$$

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Which of the following is the electric power's formula?

A) $$P = \frac{{{V^2}}}{R}$$ B) P = V × I C) P = I² × R D) All of these

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Find the potential energy of an object 3m mass raised from the ground at a height of h-

A) 6 mgh B) 9 mgh C) 3 mgh D) $$\frac{1}{3}mgh$$

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

If force F = 0, then work done W = ?

A) 20 B) 0 C) 1 D) 100

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

A boy of 50 kg mass climbs 45 stairs in 9 seconds. If the height of each stair is 15cm, then calculate his power. (g= 10ms^-2)

A) 325W B) 275W C) 475W D) 375W

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Formula of power is -

A) Momentum/time B) Work/time C) Speed/time D) Displacement/time

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Which of the following increase or decrease with height?

A) Nuclear energy B) Chemical energy C) Potential energy D) Mechanical energy

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

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Work, Energy and Power MCQ question and answer with solution | Physics Gk MCQs