GCSE Physics - Essential Calculations

Calculations 1

20 marks over 10 questions.

You need to be able to remember all of the formulae required for this test.
You can have the one for free, though: E=IVt

1. a) A light operates with a current of 4 A and a voltage of 10 V.
What is the power output of the light?

[2]

b) Another light receives 5 A and works at 10 W.
What is the voltage of this circuit?

[2]

2. a) In the Westcountry a kWh costs only 5p.
What is the cost of 60 kWh in pounds?

[2]

b) Kevin is making a visit to the Westcountry with his laptop.
How much, in pence, would the hotel's bill go up by if Kevin left his 300 W laptop on for 2 hours?

[2]

3. a) How much energy would a 2.5kW appliance use over three minutes?
Give your answer in kilojoules.

[2]

b) A battery has only 2 kJ of energy left.
How long, in seconds, could it support a 10 W circuit for?

[2]

4. a) A circuit has resistance 50 Ω and current 7 A.
What is the voltage in the current?

[2]

b) A 9 V battery is joined to a 18 Ω circuit.
What will be the current in the circuit?

[2]

5. How much charge will pass though a point in a circuit with 16 A current over one minute?

[2]

6. A transformer with 30 turns on the primary and 120 turns on the secondary converts a voltage into 72 V.
What was the original voltage?

[2]

Buster Tests - GCSE Revision Tests

GCSE Physics - Essential Calculations

Calculations 1

Register or Log In

Subjects

Tests on the same topic

Buster Answers - Top Tags