Three identical square loops are made of a single wire as shown.The magnetic field depending on time as `B=B_(0)t` is present in the region as shown. The side of the square is a and resistance per unit length of the wire is `lambda` .The induced current in the loop is `(B_(0)a)/(4k lambda)` where k=

A square loop of wire carrying current I is lying in the plane of paper as shown in Fig. 1.141. The magnetic field is present in the region as shown. The loop will tend to rotate

A circular current carrying loop is placed in x-y plane as shown in figure. A uniform magnetic field B=B_(0)hatK is present in the region. Match the following.

Figure shows a wire frame PQSTXYZ placed in a time varying magnetic field given as B=betat , where beta is a positive constant.Resistance per unit length of the wire is lambda .Find the current induced in the wire and draw its electrical equivalent diagram.

Figure shows two circular rings of radii a & b (a gt b) joined together by wire of negligible resistance. If the arrangement is placed in a time varying magnetic field, (dB)/(dt)=k and if the resistance per unit length of wire is lambda , then induced current is

A square loop of side b is rotated in a constant magnetic field B at angular frequency omega as shown in the figure. What is the emf induced in it?

A plane loop is shaped as two squares (Fig) and placed in a uniform magnetic field at right angle to the loop's plane. The magnetic induction varies with time as B =B_(0) sin (omega)t, where B_(0) = 10 mT and (omega) = 100 rads^(-1) . The wires do not touch at point A. If resistance per unit length of the loop is 50 m(Omega)// m , then amplitude of current induced in the loop is

Figure 3.15(a) shown two circular rings of radii a and b (a gt b) joined together with wires of negligible resistance. Figure 3.15(b) shown thew pattern obtained by folding the small loop in the plane of the large loop. (a) The pattern shown in Fig.3.15( c ) is obtained by twisting the small loop of Fig.3.15(a) through 180^(@) . All the three arrangement are placed in a uniform time varying magnetic field dB//dt = k , perpendicular to the plane of the loops. if the resistance per unit length of the wire is lambda , then determine the induced current in each case.

A loop shown in the figure is immersed in the varying magnetic field B=B_0t , directed into the page. If the total resistance of the loop is R , then the direction and magnitude of induced current in the inner circle is

B_0 is the magnetic field at point P fir s given straight wire as shown in figure. If this wire is bent into a circular loop,then magnetic field at the center of the loop is

Magnetic field B in a cylindrical region of radius r varies according to the law B = B_(0)t as shown in the figure. A fixed conducting loop ABCDA of resistance R is lying in the region as show . The current flowing through the loop is