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Power for JEE: 24 solved questions

Real JEE paper questions on power, part of work, energy and power. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2005 to 2026. No sign-in needed to read them.

What this topic asks

• Average and instantaneous power — 10 questions
• Motors, pumps and belts — 7 questions
• Motion under constant power — 7 questions

All 24 questions with solutions

• An object of mass 1000 g experiences a time dependent force ⃗F=(2t̂i+3t²̂j) N. The power generated by the for… JEE Main 7th April 1st Shift 2025
• A body of mass 4 kg is placed on a plane at a point P having coordinate (3,4) m. Under the action of force ⃗F… JEE Main 28th Jan 2nd Shift 2025
• A sand dropper drops sand of mass m(t) on a conveyer belt at a rate proportional to the square root of speed… JEE Main 29th Jan 1st Shift 2025
• A body is moving unidirectionaly under the influence of a constant power source. Its displacement in time t i… JEE Main 5th April 2nd Shift 2024
• A body of mass 2 kg begins to move under the action of a time dependent force given by ⃗F=(6t̂i+6t²̂j) N. The… JEE Main 31st Jan 2nd Shift 2024
• Sand is being dropped from a stationary dropper at a rate of 0.5 kg s⁻¹ on a conveyor belt moving with a velo… JEE Main 27th July 1st Shift 2022
• A particle of mass m is moving in a circular path of constant radius r such that its centripetal acceleration… JEE Main 28th June 1st Shift 2022
• Water falls from a 40 m high dam at the rate of 9×10⁴ kg per hour. Fifty percentage of gravitational potentia… JEE Main 28th June 2nd Shift 2022
• A body at rest is moved along a horizontal straight line by a machine delivering a constant power. The distan… JEE Main 20th July 2nd Shift 2021; AIEEE 2003
• An automobile of mass m accelerates starting from origin and initially at rest, while the engine supplies con… JEE Main 27th July 2nd Shift 2021
• A constant power delivering machine has towed a box, which was initially at rest, along a horizontal straight… JEE Main 18th March 1st Shift 2021
• A particle is moving unidirectionally on a horizontal plane under the action of a constant power supplying en… JEE Main 3rd Sept 2nd Shift 2020
• A 60 HP electric motor lifts an elevator having a maximum total load capacity of 2000 kg. If the frictional f… JEE Main 7th Jan 1st Shift 2020
• An elevator in a building can carry a maximum of 10 persons, with the average mass of each person being 68 kg… JEE Main 7th Jan 2nd Shift 2020
• A car of weight W is on an inclined road that rises by 100 m over a distance of 1 km and applies a constant f… JEE Main Online 2016
• A particle of mass M is moving in a circle of fixed radius R in such a way that its centripetal acceleration… JEE Main Online 2016
• A body of mass m is accelerated uniformly from rest to a speed v in a time T. The instantaneous power deliver… AIEEE 2005; AIEEE 2004
• A body of mass 2 kg begins to move under the influence of time dependent force ⃗F=(2t̂i+6t²̂j) N, where ̂i an… JEE Main 4th April 1st Shift 2026
• If the maximum load carried by an elevator is 1400 kg (600 kg-Passengers + 800 kg-elevator), which is moving… JEE Main 10th April 2nd Shift 2023
• A block of mass 5 kg starting from rest pulled up on a smooth incline plane making an angle of 30° with horiz… JEE Main 11th April 2nd Shift 2023
• The ratio of powers of two motors is (3√x)/(√x+1), that are capable of raising 300 kg water in 5 minutes and… JEE Main 13th April 1st Shift 2023
• A body of mass 1 kg begins to move under the action of a time dependent force ⃗F=(t̂i+3t²̂j) N, where ̂i and… JEE Main 24th Jan 2nd Shift 2023
• A body of mass 2 kg is initially at rest. It starts moving unidirectionally under the influence of a source o… JEE Main 30th Jan 2nd Shift 2023
• A body of mass 2 kg is driven by an engine delivering a constant power of 1 J/s. The body starts from rest an… JEE Main 5th Sept 2nd Shift 2020