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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 17 - Electric Charge and Field > An isolated conducting sphere of radius 0.2 m placed in a medium of electric constant 3 carries a positive charge of 0.3 μC. Find the electric intensity at a point at a distance 0.3 m from the surface of the sphere.

An isolated conducting sphere of radius 0.2 m placed in a medium of electric constant 3 carries a positive charge of 0.3 μC. Find the electric intensity at a point at a distance 0.3 m from the surface of the sphere.

An electron initially at rest falls a distance of 1.5cm in a uniform electric field of magnitude 2×10^4N/C. The time taken by the electron to fall this distance is