One of your friends argues that he has read in previous chapters that there can be no electric field inside a conductor. And hence there can be no current through it.What is the fallacy in this argument?

Electric field inside a conductor can be zero only, if potential inside the conductor is

When a steady current passes through a cylindrical conductor, is there an electric field inside the conductor?

When a steady current passes through a cylindrical conductor, is there an electric field inside the conductor?

An electric bulb is rated "220 V, 100 W'. What safe current can be passed through it?

A currrent I is passed through a silver strip of width d and area of cross section A. The number of free electrons per unit volume is n. (a) Find the drift velocity v of the electrons. (b) If a magnetic field B exists in the region as shown in what is the average magnetic force on the free electrons? (c) Due to the magnetic force, the free electrons get accumulated on one side of the conductor along its length. This produces a transverse electric field in the conductor which opposes the magnetic force on the electrons. Find the magnitude of the electric field which will be the potential diference developed across the width of the conductor due to the electron- accumulation? The appearance of a transverse emf, when a current-carrying wire is placed in a magnetic field, is called hall effect.

An electric kettle is rated at 230 V, 1000 W. What is the safe value of current that can pass through its element ?

A cylindrical conductor has length l and area of cross section A. Its conductivity changes with distance (x) from one of its ends as sigma = sigma_(0) (l)/(x). [sigma_(0) "is a constant"] . Calculate electric field inside the conductor as a function of x , when a cell of emf V is connected across the ends.

What potential difference must be applied to produce an electric field that can acceleration an electric charge to one length the velocity of light ?

Addison has a reading assigment to complete. The number of pages he has left to read d days after being given the assigment can be modeled by the equation n=252-47d , where n is the number of pages left to read. What is the meaning of 252 in the equation?

Battery shown in figure has e.m.f. E and internal resistance r . Current in the circuit can be varied by sliding the contact J . If at any instant current flowing through the circuit is I , potential difference between terminals of the cells is V , thermal power generated in the cell is equal to eta fraction of total electrical power generated in it, then which of the following graphs is correct ?