Expert Physics Tutoring

Q1. Knowledge Recall (2 marks)

Define the term 'thermal conductivity'.

Q2. Application (3 marks)

Explain how an electric kettle uses the transfer of thermal energy to boil water.

Q3. Knowledge Recall (2 marks)

State the four methods of heat transfer.

Q4. Application (3 marks)

Discuss the advantages and disadvantages of using a refrigerator to store food.

Q5. Calculations (4 marks)

A hot-water heater has a volume of 150 liters. If the water heats up from 20°C to 60°C, calculate the amount of heat energy gained by the water. (Specific heat capacity of water = 4200 J/kg K)

Q6. Application (3 marks)

Explain how a microwave oven uses electromagnetic radiation to heat food.

Q7. Knowledge Recall (2 marks)

Name the three types of electrical plugs used in the UK.

Q8. Application (3 marks)

Discuss the potential hazards associated with using electricity in the home.

Q9. Calculations (3 marks)

A washing machine has a power rating of 2 kW and is used for 2 hours. Calculate the energy used by the machine in kilowatt-hours (kWh).

Q10. Knowledge Recall and Application (6 marks)

a. Define the term 'electrical fuse' and explain its function. (3 marks)

b. Draw a labeled diagram of a mains plug and socket. (3 marks)