6.2.4.2 AQA Energy Transfer and Electrical Appliances

Which factor does NOT affect the amount of energy an appliance transfers?

• How long the appliance is switched on

• The power of the appliance

• The color of the appliance

• The type of energy source

What is the equation for energy transferred using power and time?

• E = QV

• E = Pt

• E = VQ

• E = tP

In the equation E = QV, what does Q represent?

• Power

• Time

• Charge flow

• Potential difference

What unit is used to measure energy transferred?

• Watts

• Volts

• Joules

• Coulombs

What is the unit of power in the context of energy transfer?

• Joules

• Watts

• Volts

• Coulombs

Which of the following is a unit of charge flow?

• Joules

• Watts

• Coulombs

• Volts

What is the relationship between power, potential difference, and current in a circuit device?

• Power is unrelated to potential difference and current

• Power is the product of potential difference and current

• Power is the sum of potential difference and current

• Power is the difference between potential difference and current

What does the symbol V represent in the equation E = QV?

• Power

• Time

• Charge flow

• Potential difference

How is energy transferred in domestic appliances?

• From batteries or mains to kinetic or heating energy

• From kinetic energy to potential energy

• From heating energy to light energy

• From light energy to sound energy

What is the unit of potential difference?

• Joules

• Watts

• Volts

• Coulombs