Home
Class 12
PHYSICS
Same current i is flowing in the three i...

Same current i is flowing in the three infinitely long wires along positive x-,y- and z-directions. The magnetic filed at a point (0,0,-a) would be

A

`(mu_0i)/(2pia)(hatj-hati)`

B

`(mu_0i)/(2pia)(hati-hatj)`

C

`(mu_0hati)/(2pia)(hati+hatj)`

D

`(mu_0i)/(2pia)(-hati-hatj)`

Text Solution

Verified by Experts

The correct Answer is:
A
Magnetic field due to current in the wire along z-axis is zero. Magnetic field due to wire along x-axis is along hatj direction and magnetic field due to wire along y-axis is along `-hati` direction. Both wires produce
`B=mu_0/(2pi) i/a`
Promotional Banner

Topper's Solved these Questions

  • MAGNETICS

    DC PANDEY|Exercise MCQ_TYPE|1 Videos

  • MAGNETICS

    DC PANDEY|Exercise SUBJECTIVE_TYPE|1 Videos

  • MAGNETIC FIELD AND FORCES

    DC PANDEY|Exercise Medical entrance s gallery|59 Videos

  • MAGNETISM AND MATTER

    DC PANDEY|Exercise Medical gallery|1 Videos

Similar Questions

Explore conceptually related problems

A current of 10A is established in a long wire along the positive z-axis. Find the magnetic field (vec B) at the point (1m , 0 , 0).

A direct current l flow along the length of an infinitely long striaght thin walled pipe then the magnetic field is

Two infinitely long parallel wires carry equal current in same direction. The magnetic field at a mid point in between the two wires is

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:

Find the electric field vector at P (a,a,a) due to three infinitely long lines of charges along the x-, y- and z-axis, respectively. The charge density i.e. charge per unit length of each wire is (lamba) ,

A current I flows along the length of an infinitely long, straight , thin - walled pipe. Then