A long straight wire carrying a current of 30 A is placed in an external uniform magnetic field of induction 4 × 10–4 T. The magnetic field is acting parallel to the direction of current. The magnitude of the resultant magnetic induction in tesla at a point 2.0 cm away from the wire is -
A wire of length L carrying current i is bent into circular loop with
(i) one turn
(ii) n turns.
Find the ratio of magnetic induction at centre in above two cases.
Two infinitely long, thin, insulated, straight wires lie in the x-y plane along the x and y-axis respectively. Each wire carries a current I, respectively in the positive x-direction and positive y-direction. The magnetic field will be zero at all points on the straight line-
A proton, a dutron and an a particle with the same KE enter in a region of uniform magnetic field, moving at right angles to B. what is the ratio of the radii of their circular paths ?
An electron moving with velocity v along the axis approaches a circular current carrying loop as shown in the figure. The magnitude of magnetic force on electron at this instant is-
Cyclotron is used to accelerate –
A charged particle is released from rest in a region of steady and uniform electric and magnetic field which are parallel to each other. The particle will move in a -
