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WorksheetsEnergy & electricity recap quiz
Total questions: 22
Worksheet time: 17mins
What are the units of energy?
Joules
Watts
Newtons
Kilograms
What are the units of mass?
Newtons
Kilograms
Watts
Metres
What are the units of velocity?
Metres
Metres per second
Seconds
Metres per second squared
What are the units of power?
Watts
Joules
Newtons
Seconds
What is the unit of charge?
Coulombs
Amps
Volts
Ohms
What is the unit of current?
Amps
Volts
Coulombs
Ohms
What is the unit for potential difference?
Volts
Amps
Coulombs
Ohms
What is the unit for resistance?
Volts
Amps
Coulombs
Ohms
What are the units of work done?
Joules
Watts
Newtons
Kilograms
What is the law of conservation of energy?
Energy cannot be created and destroyed but only transferred from one store to another.
Energy can only be created when it is transferred between stores.
Energy cannot be created, but it can be destroyed or used up when it's transferred to a different store.
Define specific heat capacity
The energy needed to raise the temperature 1 kg of a material by 1ᵒ C
The energy needed to change the state of 1 kg of material.
The change of temperature of a material when it changes state.
The energy lost by a material when it is moved into a cold room.
What are the equations for calculating efficiency?
(Select ALL correct answers)
Efficiency = useful energy output/total energy input
Efficiency = useful power output/useful power input
Efficiency = total energy output/total energy input
Efficiency = total work done/total power output
Efficiency = total power output/total power input
Which of these energy resources are renewable?
(select ALL correct answers!)
biofuel
nuclear
hydroelectricity
coal
tidal
Which of these are types of energy transfer?
(select ALL correct answers!)
mechanical
electrical
radiation
heat
chemical
Which of these is NOT a type of energy store?
(select ALL correct answers!)
mechanical
kinetic
elastic potential
radiative
internal
What is a series circuit?
A circuit with only one route for charge to flow
A circuit with more than one route for charge to flow
A circuit with only one component in it
A circuit with only one source of power
What is a parallel circuit?
A circuit with only one route for charge to flow
A circuit with more than one route for charge to flow
A circuit with multiple components in it
A circuit with two sources of power
Which component is this IV graph for?
Resistor
Filament lamp
Diode
Which component is this IV graph for?
Resistor
Filament lamp
Diode
Which component is this IV graph for?
Resistor
Filament lamp
Diode
Explain why increasing the temperature of a wire increases its resistance
The ions in the metal vibrate/move more, causing more collisions with electrons.
The heat causes the electrons to speed up.
The ions vibrate/move around more, so there is more space for the electrons to move
The heat reduces the potential difference across the wire.
In a circuit the potential difference causes.....?
charge to flow
the resistance to increase
ions to move
the component to turn on
