David Sang Solutions for Chapter: Work and Power, Exercise 4: Questions

Author:David Sang

David Sang Physics Solutions for Exercise - David Sang Solutions for Chapter: Work and Power, Exercise 4: Questions

Attempt the free practice questions on Chapter 8: Work and Power, Exercise 4: Questions with hints and solutions to strengthen your understanding. Cambridge IGCSE® Physics Coursebook Second Edition solutions are prepared by Experienced Embibe Experts.

Questions from David Sang Solutions for Chapter: Work and Power, Exercise 4: Questions with Hints & Solutions

EASY
Upper Secondary: IGCSE
IMPORTANT

How many watts are there in a kilowatt?

EASY
Upper Secondary: IGCSE
IMPORTANT

How many watts are there in a megawatt?

EASY
Upper Secondary: IGCSE
IMPORTANT

It is estimated that the human brain has a power requirement of 40 W. How many joules per second is that?

EASY
Upper Secondary: IGCSE
IMPORTANT

A light bulb transfers 1000 J of energy in 10 s. What is its power?

EASY
Upper Secondary: IGCSE
IMPORTANT

An electric motor transfers 100 J in 8.0 s. If it then transfers the same amount of energy in 6.0 s, has its power increased or decreased?