Home
Class 12
PHYSICS
Magnetic in a region is given by vec B =...

Magnetic in a region is given by `vec B = B_0 hat i + B_0 hat j` . Torque on a circular loop `x^2 +z^2 = r^2` carrying current i in anticlockwise direction as seen from a point on positive y-axis is

A

`ipir²B_0 hat k`

B

` –i pi r² B_0 hat k`

C

`ipir² hat k`

D

`– i pi r B_0 hat k `

Text Solution

AI Generated Solution

Promotional Banner

Similar Questions

Explore conceptually related problems

Find vec a +vec b if vec a = hat i - hat j and vec b =2 hat i

Two infinitely long straight wires lie in the xy-plane along the lines x =pm R . The wire located at x =+R carries a constant current I_(1) and the wire located at x = -R carries a constant current I_(2) . A circular loop of radius R is suspended with its centre at (0,0, sqrt(3)R) and in a plane parallel to the xy-plane. This loop carries a constant current ? in the clockwise direction as seen from above the loop. The current in the wire is taken to be positive if it is in the +hat J direction. Which of the following statements regarding the magnetic field vec B is (are) true?

A uniform magnetic field vec(B) = 3 hat i + 4 hat j + hat k exists in region of space. A semicircular wire of radius of 1 m carrying current 1 A having its centre at (2, 2, 0) is placed in x-y plane as shown in Fig. The force on semicircular wire will be

A uniform magnetic field vec(B) = 3 hat i + 4 hat j + hat k exists in region of space. A semicircular wire of radius of 1 m carrying current 1 A having its centre at (2, 2, 0) is placed in x-y plane as shown in Fig. The force on semicircular wire will be

The magnetic field in a region is given by vec(B)=B_(0)(1+(x)/(a))hat(k) . A square loop of edge length 'd' is placed with its edge along X-axis and Y-axis. The loop is moved with a constant velocity vec(V)=V_(0)hat(i) . The emf induced in the loop is

For given vector, vec a = 2 hat i j +2 hat k and vec b = - hat i + hat j - hat k , find the unit vector in the direction of the vector vec a + vec b .

Write a unit vector in the direction of vec b=2 hat i+ hat j+2 hat kdot

If vec a= hat i+ hat j , vec b= hat j+ hat k , vec c= hat k+ hat i find the unit vector in the direction of vec a+ vec b+ vec cdot

Find | vec a xx vec b|, if vec a=2 hat i+ hat j+3 hat k and vec b=3 hat i+5 hat j-2 hat k .

Find | vec axx vec b| , if vec a= hat i-7 hat j+7 hat k and vec b=3 hat i-2 hat j+2 hat k