A conductor of resistivity `rho` and resistance R, as shown in the figure, is connected across a battery of emf V. Its radius varies from a at left end to b at right end. The electric field at a point P at distance x from left end of it is

Two cylindrical rods of same cross-section area and same length are connected in series to an ideal cell as shown.The resistivity of left rod is rho and that if right rod is 2 rho Then the variation of potential and electric field at any point P distant x from left end of combined rod system are given by

Two cylindrical rods of same cross-section area and same length are connected in series to an ideal cell as shown.The resistivity of left rod is rho and that if right rod is 2 rho Then the variation of potential and electric field at any point P distant x from left end of combined rod system are given by

A parallel plate capacitor has two layers of dielectric as shown in figure. This capacitor is connected across a battery. The graph which shows the variation of electric field (E) and distance (X) from left plate.

A cylindrical solid of length L and radius a is connected across a source of emf V and negligible internal resistance shown in figure. The resistivity of the rod at point P at a distance x from left end is given by rho=bx (where b is a positive constant). Find the electric field at point P.

A cylindrical solid of length L and radius a is connected across a source of emf V and negligible internal resistance shown in figure. The resistivity of the rod at point P at a distance x from left end is given by rho=bx (where b is a positive constant). Find the electric field at point P.

A composite rod made up of two conductors of resistivity rho_(1) and rho_(2) is shown in the figure. If face A and B are connected to a battery, find the resistance of the rod.

A composite rod made up of two conductors of resistivity rho_(1) and rho_(2) is shown in the figure. If face A and B are connected to a battery, find the resistance of the rod.

A conductor is made of an isotropic material and has shape of a truncated cone. A battery of constant emf is connected across it and its left end is earthed as shown in figure. If at a section distant x from left end electric field intensity potential and the rate of generation of heat per unit length are E V and H respectively which of the following graphs is/are correct?