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368681
Energy, Power and Heat
Description
Prepare for your Physics exams by testing your knowledge of Energy, Power and Heat.
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physics
science
physical science
science
leaving certificate
Quiz by
PatrickNoonan
, updated more than 1 year ago
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Created by
PatrickNoonan
about 11 years ago
2230
6
1
Resource summary
Question 1
Question
1 gigawatt is equal to how many watts?
Answer
Million watts
Billion watts
Trilion watts
Question 2
Question
Define Watt:
Answer
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?
Answer
Length
Cross-sectional area
Resisitivty
Angle
Question 4
Question
1 W = ? J/s
Answer
1 J/s
10 J/s
100 J/s
Question 5
Question
1 W = 1J/s
Answer
True
False
Question 6
Question
Batteries produce...?
Answer
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?
Answer
1.33' ohm
2.33' ohm
.33' ohm
Question 8
Question
According to Ohms law, I= V/c
Answer
True
False
Question 9
Question
What is heat measured in?
Answer
Joules
Degrees
Gigawatts
Question 10
Question
Which of these is not one of Maxwell's stipulations for the definition of heat?
Answer
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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