Question

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Answer 1

Answer:

a) Multimeter

ammeter

b) The magnetic field of the electromagnet can be increased in the following two ways

By inserting a rod of soft iron or steel inside the cylindrical tube. This rod is called the core.

By increasing the total number of turns of the coil.

C) The magnetic field generated is always perpendicular to the direction of the current and parallel to the solonoid. Hence if we reverse the current the direction of magnetism also reverses. In other words the magnetic poles gets reversed (North pole becomes south pole and the south pole becomes the north pole).

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