1) Which of these metals is not magnetic? a) aluminium b) cobalt c) iron d) nickel 2) Which of these is the most accurate description of the magnetic field that forms around a current carrying wire? a) parallel lines b) concentric circles c) overlapping circles d) ripples moving outwards 3) What is this? a) a spring circuit b) a solar noid c) a coil magnet d) a solenoid 4) How can I make the magnetic field around the solenoid stronger? (pick 4) a) increase the density of the coils b) add an aluminium core c) add an iron core d) increase the number of coils e) increase the current flowing through the coils f) increase the thickness of the coils

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