Q 1 :    

A square loop of side 1 m and resistance 1 Ω is placed in a magnetic field of 0.5 T. If the plane of loop is perpendicular to the direction of magnetic field, the magnetic flux through the loop is               [2022]

  • 2 weber

     

  • 0.5 weber

     

  • 1 weber

     

  • zero weber 

     

(2)

Given, 

Side length of square, l=1 m

Resistance, R=1Ω

Magnetic field, B=0.5 T

The angle between the area vector and magnetic field is zero as the plane of coil is perpendicular to the magnetic field.

Magnetic flux, ϕ=BAcosθ

ϕ=0.5×1×1×cos0°=0.5 Wb