Question

In this experiment you will investigate which of the following properties of Faraday's law of electromagnetic induction? (Select all that apply.)

1). its dependence on the changing flux of the magnetic field in the region of the coil in which the induced current will flow

2).its dependence on the rate of change of the magnetic field passing through the coil in which the induced current will flow

3).its dependence on the magnitude of the constant magnetic field that gives rise to this effect

4).its dependence on the relative motion of a source of magnetic field and a coil in which the induced currents will flow



If you see a large 60 Hz signal being displayed on the oscilloscope while making your measurements, which of the following most likely explains this? (Select all that apply.)

1). There is a large magnetic field in the vicinity with a field that is changing at 60 Hz.

2).You have a bad connection between the coil and the oscilloscope somewhere.

3).The humidity in the room is causing these spurious signals.

4).The bench top where you are making your measurements is slightly magnetic.

Answer 1

Answered

Step-by-step explanation:

Part A

According to Faraday's law the induced emf in coil is equal to negative of its rate of change of magnetic flux time the number of turns in the coil.

`\epsilon = -N(d\phi)/(dt)`=
`-N\Delta(BA)/(\Delta t)`

When an emf generated by a change of magnetic flux, produced current of whose magnetic field opposes the change which produces it.

By the above equation the correct options are 1,2 and 4

Part B

Large signals of frequency of 60Hz are measured by osciloscope.

Hence the correct option is part 1.