Please EXPLAIN!! Thank you in advance! A.) Which of the following will create a

Question

Please EXPLAIN!! Thank you in advance!

A.) Which of the following will create a magnetic field (it may be more than one), a) all charged objects, b) current in a wire, c) a moving electron, and/or d) a moving coil of copper wire.

B.)A current will be induced in a coil of wire in which of the following situations a) the wire is moved into a magnetic field, b) a magnetic is moved into the coil, c) the coil is held steady in a magnetic field and the coil is stretched, and/or d) another coil which carries an alternating current is placed nearby and parallel to the first coil.

C.)If you drop the north pole of a magnet through a loop of wire that you are holding in your hand then as the north end approaches the loop a) a clockwise current will be produced (looking down at the loop), b) a counterclockwise current will be produced, or c) no current will be produced since you are grounding the wire loop.

Explanation / Answer

Question A: The answer is

b.current carrying conductor produces magnetic field and also

c. Moving electron also produces magnetic field.

QuestionB: all the four a b c d produces induced current.

Question C: a is correct option here when north pole is coming towards the coil it will try to oppose north by producing opposite field through induced field.

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