Question

So I need help with these three. I have worked it out and would like corrections if my answers are wrong.

1. c

2. a

3. a

1. In the lab on Ampere's law there was a side demonstration that featured a wire set between the poles of a magnet. Battery and wires were configured so that a current could be passed through the wire segment in between the poles of the magnet. Assuming that the magnetic field pointed up and that the current flowed from right to left as you looked at the wire, what happens when you touched the wire to the battery to complete the circuit?

a) Wire shifted to the right

b) Wire shifted to the left

c) Wire shifted toward you

d) Wire shifted away from you

2. If you double the number of coils in an electromagnet, then for the same current, you get

a) Twice the magnetic field

b) No change in the magnetic field

c) No answer provided

d) 4 times the magnetic field

3. The central rotating part of an AC motor consists of

a) A set of many coils of wire arranged in sets of electromagnets and couple to electrical power via brushes

b) A more or less solid cylinder of metal

c) A set of exactly one set of coils for each possible AC "phase" coming into the motor

d) No answer text provided

Answer 1

Question 1 has correct option (d) and

rest of your answer are correct