Energy, Power and Heat

Description

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

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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