Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Magnetism and Electromagnetism
293 practice questions
Topics covered
Practice questions
111–120 of 139 · Easy
Question 111
2 marks · Easy
Answer and see the solution →List two ways to increase the current produced in a wire when it is moved across a magnetic field.
Question 112
2 marks · Easy
Answer and see the solution →A student rotates a coil in a magnetic field but moves it very slowly. What will happen to the voltage induced, and why?
Question 113
3 marks · Easy
Answer and see the solution →A hand-held generator is used to power a lamp for a camping tent.
(a)[1 mark]Describe what happens inside the generator as you turn its handle.
(b)[2 marks]Explain why turning the handle faster lights the lamp more brightly.
Question 114
2 marks · Easy
Answer and see the solution →Describe what will happen if a magnet is held stationary inside a coil connected to a voltmeter.
Question 115
2 marks · Easy
Answer and see the solution →Complete the sentence: When a conductor cuts through magnetic field lines, ________ is induced in the conductor.
Question 116
1 mark · Easy
Answer and check →Which part of a transformer is responsible for linking the magnetic field between the primary and secondary coils?
- A.Soft iron core
- B.Plastic casing
- C.Copper insulation
- D.Aluminium case
Question 117
1 mark · Easy
Answer and see the solution →State whether a transformer can be used with direct current (d.c.).
Question 118
1 mark · Easy
Answer and see the solution →What is the function of a step-up transformer?
Question 119
3 marks · Easy
Answer and see the solution →A transformer has 200 turns on its primary coil and 800 turns on its secondary coil.
(a)[1 mark]State whether this is a step-up or step-down transformer.
(b)[2 marks]If the voltage across the primary coil is 5 V, calculate the voltage across the secondary coil.
Question 120
3 marks · Easy
Answer and see the solution →A step-down transformer has 900 turns on its primary coil and 90 turns on its secondary coil. The primary voltage is 225 V.
(a)[2 marks]Calculate the secondary voltage.
(b)[1 mark]State one use for a step-down transformer.