Show that the electric field intensity at a point can be given as negative of potential gradient.

Define electric field intensity at a point.

Electric field intensity at a point varies as r^(-3) for

Gravitational force is a conservation and medium independent force. Its nature is attractive. Gravitational field intensity and gravitational potential gives information about gravitational fied in vector and scaler form respectively. Actually gravitational fied intensity is equal to the negative of the negative of teh potential gradient. potential energy is defined for only conservation force. it is also equal to the total energy in escaping condition. gravitational potential is either negative or zero but can never be positive due to attractive nature of gravitational force. Gravitational potential versus distance r graph is represented in figure. The magnitude of gravitational field intensity is equal to

Gravitational force is a conservation and medium independent force. Its nature is attractive. Gravitational field intensity and gravitational potential gives information about gravitational fied in vector and scaler form respectively. Actually gravitational fied intensity is equal to the negative of the negative of teh potential gradient. potential energy is defined for only conservation force. it is also equal to the total energy in escaping condition. gravitational potential is either negative or zero but can never be positive due to attractive nature of gravitational force. A person brings a mass of 1 kg from infinity to a point A . Initially the mass was at rest but it moves with a speed of 2 m//s as it reaches A . The work done by the person on a mass is -3 J . The potential of A is:

Gravitational force is a conservation and medium independent force. Its nature is attractive. Gravitational field intensity and gravitational potential gives information about gravitational fied in vector and scaler form respectively. Actually gravitational fied intensity is equal to the negative of the negative of teh potential gradient. potential energy is defined for only conservation force. it is also equal to the total energy in escaping condition. gravitational potential is either negative or zero but can never be positive due to attractive nature of gravitational force. The gravitational potential inside a hollow sphere (mass M , radius R ) at a distance r from the centre is:

Assertion: If electric potential remains constant along a path in electric field, then the electric field must be zero. Reason: The negative of an electric potential gradient in a direction is equal to the component of electric field in that direction.

Figure shows the variation of electric field intensity E versus distance x. The magnitude potential difference between the point at x = 0 to x = 6 m will be