Question

The wire in figure below is being moved downwards through the magnetic field so as to produce induced current What would be the effect of :
a) moving the wire at a higher speed
b) moving the wire upwards rather than downwards
c) using a stronger magnet
d) holding the wire still in the magnetic field
e) moving the wire parallel to the magnetic field line ​

Answer 1

Explanation:

Answer and Explanation:

Magnetic field due to an infinite straight condun by

B=μ0I

2πr

Where

B is magnetic field

i is current through the conductor

r is the distance from the conductor

That gives

B1 -r2

B2 -r1

B2=r1B1

r2

We have

B1=4μT

r1=2cm=0.02m

r2=4cm

=

0.04

m

Plugging in the values

B2=0.02

0.04

6

That gives

B2=2μT

Thus magnetic field at a distance of 1 cm from the wire is

2μT

ï hope it help u ☺