Magnetic field due to currentHard
Question
A thin ring of radius R meter has charge q coulomb uniformaly spRead on it. The ring rotates about its axix with a constant frequency of f revolutions/s. The value of magnetic induction in Wb/m2 at the centre of the ring is
Options
A.

B.

C.

D.

Solution
Current produced due to circular motion of charge q is
I = q f ...... (i)
Magnetic field induction at the centre of the ring of radius R is

[Using (i)]
I = q f ...... (i)
Magnetic field induction at the centre of the ring of radius R is

[Using (i)]Create a free account to view solution
View Solution FreeMore Magnetic field due to current Questions
Infinite number of straight wires each carrying current I are equally placed as shown in the figure. Adjacent wires have...A conducting rod of length l and mass m is moving down a smooth inclined plane of inclination θ with constant veloc...Wires 1 and 2 carrying currents i1 and i2 respectively are inclined at an angle θ to each other. What is the force ...A wire carrying a current I is bent into the shape of an exponential spiral, r = eθ, form θ = 0 to θ = 2&...The torque acting on a current carrying loop placed in magnetic field does not depend upon :-...