PL explain...with directions ?PL don't copy as I did not understand ?torque n force find ..I can't find the second force
Dear Student
The magnetic moment
, where,
is the unit vector along the normal to the surface of the loop.
The attractive force per unit length of the loop is that is on side PQ
Force is attractive as direction of current is same as direction of current in wire
The repulsive force per unit length of the loop is that is on side RS
.png)
Force is repulsive as direction of current is opposite as direction of current in wire
On other two sides (PS and QR) of loop force will get cancel out as force will be equal and opposite in direction
Net force = Fnet= Fa-Fr
The net force acting on the loop is not zero, because the attractive force is greater than the repulsive force.
The torque on the loop is given by,
, where, A is the area vector of the loop and .png)
is the angle between the area vector and the magnetic field.
Here, the area vector is parallel to the magnetic field, so.png)
=00. Therefore,
The torque acting on the loop is zero.
Regards
The magnetic moment
, where, is the unit vector along the normal to the surface of the loop.The attractive force per unit length of the loop is that is on side PQ
Force is attractive as direction of current is same as direction of current in wire
The repulsive force per unit length of the loop is that is on side RS
Force is repulsive as direction of current is opposite as direction of current in wire
On other two sides (PS and QR) of loop force will get cancel out as force will be equal and opposite in direction
Net force = Fnet= Fa-Fr
The net force acting on the loop is not zero, because the attractive force is greater than the repulsive force.
The torque on the loop is given by,
, where, A is the area vector of the loop and is the angle between the area vector and the magnetic field.Here, the area vector is parallel to the magnetic field, so
=00. Therefore,The torque acting on the loop is zero.
Regards