1) Which of these is not a magnetic material? a) Iron b) Copper c) Steel d) Cobalt 2) What do you call an object that is always magnetic? a) A permanent magnet. b) An electromagnet. c) An induced magnet. d) A solenoid. 3) What do you call an object that only becomes magnetic in a magnetic field? a) A permanent magnet. b) An electromagnet. c) An induced magnet. d) A solenoid. 4) What do you call a coiled up wire? a) A permanent magnet. b) An electromagnet. c) An induced magnet. d) A solenoid. 5) Which of these options correctly describes the direction of the magnetic field? a) From North to South. b) From South to North. c) From left to right. d) From right to left. 6) What is the shape of the magnetic field around a wire? a) Rectangular b) Circular c) Triangular d) Hexagonal 7) Which component in an electric motor makes sure that the current always flows in the same direction? a) The split-ring current switcher. b) The split-ring coil. c) The split-ring transformer. d) The split-ring commutator. 8) Which of these is not a way to increase the strength of a solenoid? a) Increase the number of coils. b) Increase the current. c) Spread out the coils more. d) Add an iron core. 9) What are the units of magnetic flux density? a) Tesla, T b) Amps, A c) Volts, V d) Watts, W 10) What does this finger represent in Fleming's left hand rule? a) The direction of current b) The direction of magnetic field c) The direction of force 11) What does this finger represent in Fleming's left hand rule? a) The direction of current b) The direction of magnetic field c) The direction of force 12) What does this finger represent in Fleming's left hand rule? a) The direction of current b) The direction of magnetic field c) The direction of force 13) What is the direction of the force on this wire? a) Up b) Down c) Into the screen d) Out of the screen 14) What do you add to a solenoid to make it an electromagnet? a) More coils b) An iron core c) A steel core d) A copper core 15) What is the name of the effect that causes a current-carrying wire to feel a force in a magnetic field? a) The motor effect b) The generator effect c) The electromagnetic effect d) The motion effect 16) What will happen to these objects? a) Attract b) Repel c) No magnetic force 17) What will happen to these objects? a) Attract b) Repel c) No magnetic force 18) What will happen to these objects? a) Attract b) Repel c) No magnetic force 19) What will happen to these objects? a) Attract b) Repel c) No magnetic force 20) What will happen to these objects? a) Attract b) Repel c) No magnetic force

Y11 Magnets Revision

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