How much is the flux density B at the centre of a long solenoid?

How much is the drift velocity of electrons?

Write down an expression for the flux density B inside a long straight solenoid, explaining the symbols used.

How much is the drift velocitu of electrons?

Two long straight, current-carrying condcutors , PQ and XY, are held a constant distance apart as shown in the figure. The conductors carry the magnitude of current in the same direction . A plan view form above the conductors is shown in the figure. The magnetic flux density B at a distance d from a long straight wire carrying a current I is given by B = 2.0 xx 10^-7 I/d Use this expression to explain why, under normal circumstances, wires carrying alternating current are not seen to vibrate.

A conducting wire of 100 turns is wound over 1 cm near the centre of a solenoid of 100 cm length and 2 cm radius having 1,00 turns. Calculate coefficient of mutual inductance of the two solenoids.

A solenoid 50 cm long has 4 layers of winding of 350 turns each. If the current carried is 6.0 A, estimate the amgntiude of magnetic field near the centre of the solenoid on its axis

Why does the acceleration of a magnet falling through a long solenoid decrease?