If the radius of a current carrying coil

CUET Preparation Today

Start Free Mocks

Home Questions 4C9VCRCHEG

Target Exam

CUET

Subject

Physics

Chapter

Moving Charges and Magnetism

Question:

Consider a circular current carrying conducting coil.

If the radius of a current carrying coil is doubled keeping the current unchanged, what is the magnetic field at its center?

Options:

doubled

halved

increases four times

remains unchanged

Correct Answer:

halved

Explanation:

B is inversely proportional to R