Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Electricity
249 practice questions
Topics covered
Practice questions
161–170 of 249
Question 161
3 marks · Normal
Answer and see the solution →A heater is connected to a 230 V supply and draws a current of 4.0 A for 5 minutes. Calculate the total energy transferred by the heater in this time. Include units in your answer.
Question 162
1 mark · Easy
Answer and see the solution →State whether each of the following is a conductor or an insulator: aluminum foil, plastic cup.
Question 163
1 mark · Easy
Answer and see the solution →Give one example of a common material that acts as an electrical insulator.
Question 164
3 marks · Easy
Answer and see the solution →A student rubs a polythene rod with a dry cloth.
(a)[1 mark]State what happens to the charge on the polythene rod after rubbing.
(b)[1 mark]State which particle moves to create the charge.
(c)[1 mark]Does the polythene rod gain or lose electrons? Explain briefly.
Question 165
2 marks · Easy
Answer and see the solution →Describe a practical method to show that a plastic pen can be charged by friction.
(a)[1 mark]State one thing you could rub the pen with.
(b)[1 mark]State how you would show the pen is charged after rubbing.
Question 166
2 marks · Easy
Answer and see the solution →A material becomes positively charged when rubbed. Explain in terms of electrons how this happens.
(a)[1 mark]Does the material gain or lose electrons?
(b)[1 mark]Explain why losing electrons makes the material positively charged.
Question 167
2 marks · Easy
Answer and see the solution →Explain why metal objects cannot be charged by friction in the same way as plastic rods.
Question 168
2 marks · Easy
Answer and see the solution →Explain what happens, in terms of electrons, when a glass rod is rubbed with a silk cloth.
Question 169
1 mark · Easy
Answer and see the solution →What name is given to a material that allows electricity to flow easily through it?
Question 170
4 marks · Normal
Answer and see the solution →A student wants to separate conductors from insulators using a test circuit with a lamp.
(a)[1 mark]State two materials that would make the lamp light in this circuit.
(b)[1 mark]State two materials that would NOT make the lamp light in this circuit.
(c)[2 marks]Explain why the materials stated in part (a) are conductors of electricity, while those in part (b) are not.