Energy in the home

Science

Which is the correct equation for calculating energy?

Which equation is correct for calculating total cost of energy used in the home?

On an electricity bill, the present reading is 65,421 and the previous reading was 65,127. How many kWh was charged for this bill?

An object has a power of 900 W and is on for 2 hours. Calculate the energy used in kWh.

Calculate the cost of electricity for a hairdryer that uses 1.2 kWh at a cost of 34p per kWh.

Which of the following is **not** a standard unit of time? 

How do you convert a price given in pence to pounds?

Calculate the energy transferred by a 1,500 watt heater in 20 seconds.

How long does it take for a 1,750 W kettle to boil water with 31,500 J of energy?