# Energy, Power and Heat

### Description

Prepare for your Physics exams by testing your knowledge of Energy, Power and Heat.
Quiz by PatrickNoonan, updated more than 1 year ago Created by PatrickNoonan about 10 years ago
2224
6

## Resource summary

### Question 1

Question
1 gigawatt is equal to how many watts?
• Million watts
• Billion watts
• Trilion watts

### Question 2

Question
Define Watt:
• The unit, defined as one joule per second, measures the rate of energy conversion or transfer.
• The rate at which energy is generated or consumed and hence is measured in units
• the rate at which work is done when an object's velocity is held constant at one meter per second against constant opposing force of one newton.

### Question 3

Question
Which of these doesn't impact on the resistance of a material?
• Length
• Cross-sectional area
• Resisitivty
• Angle

Question
1 W = ? J/s
• 1 J/s
• 10 J/s
• 100 J/s

Question
1 W = 1J/s
• True
• False

### Question 6

Question
Batteries produce...?
• AC
• DC
• AC/DC

### Question 7

Question
If R= p/I^2 then what is the resistance of a 12 watts on a 3 watt current?
• 1.33' ohm
• 2.33' ohm
• .33' ohm

### Question 8

Question
According to Ohms law, I= V/c
• True
• False

### Question 9

Question
What is heat measured in?
• Joules
• Degrees
• Gigawatts

### Question 10

Question
Which of these is not one of Maxwell's stipulations for the definition of heat?
• It is something which may be transferred from one body to another, according to the second law of thermodynamics.
• It is a measurable quantity, and thus treated mathematically
• Heat refers to a process of transfer of energy between a system and its surroundings other than by work or transfer of matter.

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