A time varying uniform magnetic field passes through a circular region of radius R. The magnetic field is directed outwards and it is a function of radial distance 'r' and time 't' according to relation B-B_(0)rt. The induced electric field strength at a radial distance `R//2` from the centre will be.

A uniform magnetic field exists in a circular region of radius R centred at O. The field is perpendicular to the plane of paper and is strength varies with time as B=B_(0)t . Find the induced electric field at a distance r from the centre for (i) r lt R , (ii) r gt R . Also, plot a graph between |E| and r for both the cases.

A uniform magnetic field exists in a circular region of radius R centrad at O. The field is perpendicular to the plane of paper and is strength varies with time as B=B_(0)t . Find the induced electric field at a distance r from the centre for (i) r lt R , (ii) r gt R . Also, plot a graph between |E| and r for both the cases.

The magnetic field at a distance r from a long wire carryimg current I is 0.4 T. The magnetic field at a distance 2r is

The magnetic field at a distance r from a long wire carryimg current I is 0.4 T. The magnetic field at a distance 2r is

The magnetic field at a distance r from a long wire carryimg current I is 0.4 T. The magnetic field at a distance 2r is

The magnetic field at a distance r from a long wire carryimg current I is 0.4 T. The magnetic field at a distance 2r is

A uniform but time-varying magnetic field B(t) exists with in a circular region of radius a and is directed in to the plane of the paper as shown in the figure. The magnitude of the induced electric field at the point P at a distance r from the centre of the circular region

Figure shows a circular region of radius R in which uniform magnetic field B exists. The magnetic field is increasing at a rate (dB)/(dt) . The induced electric field at a distance r from the centre for r lt R is

The magnetic field at the centre of a circular current carrying conductor of radius r is B_(c) . The magnetic field on its axis at a distance r from the centre is B_(a) . The value of B_(c):B_(a) will be