Question

Three identical long solenoids P, Q and R connected to each other as shown in figure. If the magnetic field at the centre of P is 2.0 T, what would be the field at the centre of Q ? ​

Answer 1

Answer:

As the solenoids are identical, current i in Q and R will be equal and i

Q

=

2

i

R

=

2

i

P

∴B

Q

=B

R

=

2

B

P

since current is half.

Given B

P

=2T

∴B

Q

=B

R

=

2

B

P

=

2

2

T=1T