Banner 0
Banner 1
Banner 2
Banner 3
Banner 4
Banner 5
Banner 6
Banner 7
Banner 8

Q.

A long solenoid has 200 turns/cm and carries a current i. The magnetic field at its centre is 6.28 x 10-2 Wb / m2. Another long solenoid has 100 turns/cm and carries a current i / 3. The value of magnetic field at its centre is

see full answer

High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET

🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.
An Intiative by Sri Chaitanya

a

1.05 x10-3  Wb/m2

b

1.05 x10-5 Wb/m2

c

1.05 x 10-2 Wb/m2

d

1.05 x 10-4 Wb/m2

answer is A.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

Detailed Solution

detailed_solution_thumbnail

Magnetic field due to a long solenoid is given by
B=μ0ni
 628×102=μ0×200×102×i……………..(1)
and B=μ0×100×102×(i/3)………………………(2
Solving eqs. [1) and (2), we get
B=105×102Wb/m2

Watch 3-min video & get full concept clarity

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon