In Fig. a three-side frame is pivoted at AC and hangs vertically. Its sides are each of the same length and have a linear density of `0.10 kg m^-1`. A current of 10.0 A is sent through the frame, which is in a uniform magnetic field of 10 mT directed upward. Through what angle will the frame be deflected?

The magnetic force per unit length on a wire carrying a current of 10 A and making an angle of 45^@ with the direction of a uniform magnetic field of 0.20 T is

A wire frame is in the shape of a regular polygon of 2016 sides. Each side is of length L = 1 cm. If a current I = 5.0 A is given to the wire frame estimate the magnetic induction field (B) at the centre of the polygon. [Take pi^(2) = 10.08]

A current of 2.0 amp is flowing through a wire of length 50 cm. If this wire be placed at an angle of 60^(@) with the direction of a uniform magnetic field of 5.0 xx 10^(-4) N/Am the force on the wire will be-

A uniform constant magnetic field B is directed at an angle of 45^(@) to the x axis in the xy - plane . PQRS is a rigid, square wire frame carrying a steady current I_(0) , with its centre at the origin O . At time t = 0 , the frame is at rest in the position as shown in figure , with its sides parallel to the x and y axis. Each side of the frame is of mass M and length L . (a) What is the torque tau about O acting on the frame due to the magnetic field? (b) Find the angle by which the frame rotates under the action of this torque in a short interval of time Deltat , and the axis about this rotation occurs . ( Deltat is so short that any variation in the torque during this interval may be neglected .) Given : the moment of interia of the frame about an axis through its centre perpendicular to its about an axis through its centre perpendicular to its plane is (4)/(3) ML^(2) .

A uniform constant magnetic field B is directed at an angle of 45^(@) to the x axis in the xy - plane . PQRS is a rigid, square wire frame carrying a steady current I_(0) , with its centre at the origin O . At time t = 0 , the frame is at rest in the position as shown in figure , with its sides parallel to the x and y axis. Each side of the frame is of mass M and length L . (a) What is the torque tau about O acting on the frame due to the magnetic field? (b) Find the angle by which the frame rotates under the action of this torque in a short interval of time Deltat , and the axis about this rotation occurs . ( Deltat is so short that any variation in the torque during this interval may be neglected .) Given : the moment of interia of the frame about an axis through its centre perpendicular to its about an axis through its centre perpendicular to its plane is (4)/(3) ML^(2) .

A coil in the shape of an equilateral triangle of side 0.01 m is suspended from the vertex such that is hanging in a vertical plane between pole pieces of a permanent magnet producing a horizontal magnetic field of ( 4×10^(-2) T).If a current of 1A is passing through it and the magnetic field is parallel to its field,then the torque acting on the coil is

A coil in the shape of an equilateral triangle of side 0.01 m is suspended from the vertex such that is hanging in a vertical plane between pole pieces of a permanent magnet producing a horizontal magnetic field of ( 4×10^(-2) T).If a current of 1A is passing through it and the magnetic field is parallel to its field,then the torque acting on the coil is

A copper wire with density rho with cross-sectional area S bent to make three sides of a squae frame which can turn about a horizontal axis OO' as shown in figure. The wire is located in uniform vertical magnetic field. Find the magnetic induction if on passing a current I through the wire the frame deflects by an angle theta in its equilibrium position.

Shown a metallic square frame of edga a in a vertical plane. A uniform magnetic field B exists in the space in a directon perpendicular to the plane of the figure. Two boys pull the opposite corners of the square ot deform it into a rhombus. They start pulling the corners t t=0 and sisplace the corners at a uniform speed u. (a) find the induced emf in the frame at the instant when the angles at these corners reduce to 60^@ . (b) find the induced current in the frame at this instatnt if the total resistance of the frame is R. (c) Find the total charge which flows through a side of the frame by the time the square is deformed into a straight line.