Question

27. How does a galvonometer use a magnectic field to indicate the strenght of a electric current? 2 points

Answer 1

@Deepakrathee

Answer 2

@anqie37
i am not sure about this one...

Answer 3

okay thanks anyways @Deepakrathee

Answer 4

anyyone please?

Answer 5

A galvonometer consists of a wire coil, with an attached indicator needle, in the magnetic field of a permanent magnet. When current is passed through the coil, another magnetic field is produced which acts against the permanent magnet's field. This causes the coil and its indicator needle to move. How much it moves depends on the current passing through the coil.

Answer 6

@PsiSquared did u think of this or copied from a website?

Answer 7

It came from learning about and using galvanometers.

Answer 8

when the current flow through the coil it produce a magnetic field having a magnetic moment
M = I A
I current through the loop
A area of the loop

now when coil passing current through it is placed in a magnetic field it will experience a torque
t = M x B
due to torque the pointer get deflect
higher the current higher will b magnetic moment and higher will be torque and more the pointer will deflect