Q.1
What are the units used for power?
  • Joules
  • Watts
  • Volts
  • Amperes
Q.2
What is the formula for power?
  • P = W⁄t
  • P = t⁄W
  • P = W x t
  • W = P⁄t
Q.3
What is the time taken to move an object if the total power used is 100 W and the energy transferred by a force to the object is 1,000 J?
  • 10 seconds
  • 100 seconds
  • 1,000 seconds
  • 0.1 seconds
Q.4
What is transferred when work is done?
  • Charge
  • Voltage
  • Energy
  • Electrons
Q.5
What is the formula for gravitational potential energy?
  • GPE = m x h⁄g
  • GPE = h x m⁄g
  • GPE = g x h⁄m
  • GPE = m x g x h
Q.6
What is gravitational potential energy?
  • The energy an object has due to its position within a gravitational field
  • The strength of the gravitational field at the center
  • The speed of an object due to the force of gravity
  • The energy an object radiates to other objects within a gravitational field
Q.7
What is work done?
  • The amount of energy transferred to an object that is being moved
  • The amount of energy transferred to an object at rest
  • The force needed to move an object
  • The distance an object can be moved
Q.8
What are the units used for work done?
  • Joules
  • Watts
  • Coulombs
  • Amperes
Q.9
What is the gravitational potential energy of a ball of mass 100 g which is at a height of 1 m above the Earth? (Note: The gravitational strength of the Earth is 9.81 N/Kg.)
  • 1000 J
  • 1 J
  • 0.1 J
  • 1 N
Q.10
What is the formula for work done?
  • W = d⁄F
  • W = F⁄d
  • F = W x d
  • W = F x d
0 h : 0 m : 1 s