Home
Class 12
PHYSICS
In the space shown a non-uniform magneti...

In the space shown a non-uniform magnetic field `vec(B) = B_(0)(1+x)(-hat(k))` tesla is present. A closed loop of small resistance, placed in the `x y` plane is given velocity `V_(0)`. The force due to magnetic field on the loop is

A

zero

B

Along `+x-` direction

C

along `-x` direction

D

along `+y` direction

Text Solution

Verified by Experts

Use Lenz's law
Induced emf the current of opposes the change in flux through it.
Promotional Banner

Similar Questions

Explore conceptually related problems

A uniform magnetic field vec(B) = B_(0) hat(k) exists in a region. A current carrying wire is placed in x-y plane as show. Find the force acting on the wire AB, if each section of the wire is of length 'a'.

A non uniform magnetic field B=B_(0)that"i" in a region exists. A circular conducting loop of radius r and resistance R is placed with its plane in yz-plane. Determine the current through the loop and sense of the current.

There exists a uniform magnetic field bar B = B_(0)t bar k in a region. A circular conducting loop of radius r and resistance R is placed with its plane in x-y plane. Determine the current through the loop and sense of the current.

A non planar closed loop of arbitrary shape carryign a current I is placed in uniform magnetic field. The force acting on the loop

There exists a uniform magnetic field vec(B) = +B_(0) hat(k) " for " x gt 0 and vec(B) = 0 for all x lt 0 . A charged particle placed at (0, -a,0) is given an initial velocity vec(v) = v_(0) hat(i) . What is the magnitude and nature of charge on the particle such that it crosses through the origin ? Strategy: When the charge is projected perpendicular to a uniform magnetic field, it follows a circular path. In this case, the force acting on it will be directed either towards +y-axis. or y-axis. It is given that it crosses point O. Thus, the force at (0, -a, 0) must be towards y-axis

A circular wire loop of radius R is placed in the X-Y plane with its centre at the origin. The loop carries a current I in the clockwise direction when viewed from a point on the positive Z-axis. A uniform magnetic field vecB=B_(0)((hati+sqrt(3)hatj)/2) exists in the region x gt (R sqrt(3))/2 . The magnitued of the magnetic force on the loop due to the magnetic field is (B_(0)IR)/n . The value of n is______________.

A current loop of arbitrary shape lies in a uniform magnetic field B. show that the net magnetic force acting on the loop is zero.

In non-uniform magnetic field in certain direction, current loop is placed

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

Assertion In a uniform magnetic field B=B_(0)hat(k) , if velocity of a charged particle is v_(0)hat(i) at t = 0, then it can have the velocity v_(0)hat(j) at some other instant. Reason In uniform magnetic field, acceleration of a charged particle is always zero.