A conductor of length `L` is connected across a dc source of e.m.f E. If the conductor is replaced by another of the same materials and area of cross-section but of length 5 L, by what factor will the drift velocity change?

A conductor of length l is connected to a d.c. source of potential V. If the length of the conductor is tripled by streaching it, keeping V constant, explain how do the following factors vary in the conductor. 1) drift velocity 2) resistance

A conductor of length l is connected to a d.d. source of potential V. If the length of the conductor is tripled by streaching it, keeping V constant, explain how do the following factors vary in the conductor. 1) drift velocity 2) resistance

A cylindrical conductor of length l and uniform are of cross section A has resistance R. Another conductor of length 2l and resistance R of the same material has area of cross section.

A cylindrical conductor of length l and uniform are of cross section A has resistance R. Another conductor of length 2l and resistance R of the same material has area of cross section.

If the length of a wire conductor is dobled by stretching it, keeping the p.d. across it constant by what factor does the drift speed of electrons change?

A sitar wire is replaced by another wire of same length and material but of three times the earlier radius.If the tension in the wire remains the same,by what factor will the frequency change?

A wire of length L and 3 identical cells of negligible internal resistance are connected in series. Due to the current, the temperature of the wire is raised by DeltaT in a time t. A number N of similar cells is now connected in series with a wire of the same material and cross-section but of length 2L. The temperature of the wire is raised by the same amount DeltaT in the same time t. the value of N is

An inductor is connected to an a.c. source of e.m.f. if the energy stored inside the inductor in the form of magnetic field changes form maximum to minimum value in 5 ms, then the frequency of the source is

A conductor of length l is moved perpendicular to uniform magnetic field B with velocity v as shown in the figure The e.m.f. induced across the length of the conductor is