Sec3G1; AES 2024

What is the unit for power?

• J

• N

• P

• W

Which action involves converting chemical potential energy to thermal energy?

• burning a matchstick

• compressing a spring

• dropping a rock

• using an electrical kettle to boil water

Thermal energy was transferred from the drink to metal cubes.

What was the temperature of the drink and the metal cubes?

• drink: 30°C, metal cubes: 10°C

• drink: 20°C, metal cubes: 20°C

• drink: 10°C, metal cubes: 20°C

• drink: 20°C, metal cubes: 30°C

An electric fan was switched on. What happened?

• The fan started rotating.

• The fan stopped working.

• The fan made no sound.

• The fan broke down.

A person jumps out of a helicopter and parachutes to the ground. At which point does the person have the most gravitational potential energy?

• A

• B

• C

• D

An electric fan was switched on.

It released 200 J of kinetic energy, 50 J of sound energy and 50 J of thermal energy. How much electrical energy did the fan need while it was on?

• 50 J

• 100 J

• 200 J

• 300 J

What device allows electricity from power stations to be converted to high voltage for transmission?

• step-down transformer

• step-up transformer

• transmission line

• turbine

What is measured using the unit ohm(Ω)?

• current

• electricity

• resistance

• voltage

What is the circuit symbol for a fixed resistor?

• 
• 
• 
• 

Two circuits are shown in the diagram.

How are the circuits arranged?

• Circuit 1- parallel

  Circuit 2 - parallel

• Circuit 1-parallel

  Circuit 2 -series

• Circuit 1 - series

  Circuit 2 - parallel

• Circuit 1 - series

  Circuit 2 - series