An electric field of 300V/m is confined to a circular area 10cm in diameter. If the field is increasing at the rate of 20V/m/s, the magnitude field at a point 15cm from the centre of the circle will be:

If a long straight wire carries a current of 40 A, then the magnitude of the field B at a point 15 cm away from the wire is

A long straight wire carries a current of 35A . What is the magnitude of the field vecB at a point 20cm from the wire?

A long thin solenoid has 900"tuns"//"metre" and radius 2.50cm ,. The current in the solenoid is increasing at a uniform rate of 60A//s . What is the magnitude of the induced electric field at a point? a. 0.5cm from the axis of the solenoid. b. 1.0cm from the axis of the solenoid.

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

A 10 cm long rod carries a charge of +150 muC distributed uniformly along its length. Find the magnitude of the electric field at a point 10 cm from both the ends of the rod.

At a point 20 cm from the centre of a uniformly charged dielectric sphere of radius 10 cm , the electric field is 100 V//m . The electric field at 3 cm from the centre of the sphere will be

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

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

An electron is moving along +x direction with a velocity of 6 xx 10^6 ms^(-1) . It enters a region of uniform electric field of 300 V/cm pointing along + y direction. The magnitude and direction of the magnetic field set up in this region such that the electron keeps moving along the x direction will be :

A spherical conductor of radius 10 cm has a charge of 3.2 x 10^-7 C distributed uniformly. What is magnitude of electric field at point 15 cm from centre of sphere?