Subsection 1.7.5. Power for Physics, O Level - revisedeck

1.7.5. Power

A subsection of Physics, 5054, through 1. Motion, forces and energy

Listing 10 of 27 questions

In a hydroelectric power station, 4.2 × 105 kg of water passes through the turbines every second. The turbines are at a height of 50 m below the surface of the reservoir. The gravitational field strength g is 10 N / kg. Assuming there are no energy losses, what is the power output of the power station?

5054_w17_qp_12

MCQ

2017

Paper 1, Variant 2

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A motor is used to lift a load 0.50 m vertically, as shown...

5054_w18_qp_12

MCQ

2018

Paper 1, Variant 2

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A student uses a newton meter to pull an object a distance d horizontally along a flat surface in a time of t. The newton meter reading is F. What is given by the expression (F × d) / t ?

5054_w19_qp_12

MCQ

2019

Paper 1, Variant 2

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What is power ?

5054_w20_qp_12

MCQ

2020

Paper 1, Variant 2

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What is a unit of power?

5054_w22_qp_12

MCQ

2022

Paper 1, Variant 2

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A crane lifts a heavy load at a steady rate. Which unit is suitable for the output power of the crane’s motor?

5054_w24_qp_11

MCQ

2024

Paper 1, Variant 1

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Four objects of different masses are lifted through different distances in different amounts of time. In which combination of mass, distance and time is the greatest power transferred?

5054_w24_qp_12

MCQ

2024

Paper 1, Variant 2

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Questions Discovered

27