Electric Curren...

Which of the following materials should be used to make the coil of an electromagnet in order to increase its strength?

What is the difference between the wires used in the elements of an electric heater and a fuse?

If 18.75 × 10¹⁹ electrons flow through a conductor in 3 seconds, the total charge that flows through the conductor is

There is no flow of current between two charged bodies when connected because

The minimum number of cells required to make a battery is

Moving a small charge of 1.6 × 10^-19 C between two parallel plates increases its electric potential energy by 4.8 × 10^-16 J. What is the electric potential difference between the two parallel plates?

Which of the following statements is/are incorrect?

(a) An electric bell is an application of electromagnets.
(b) Heating effect of current is used in an electric bell.
(c) The coil in a bell behaves like a magnet when no current flows through it.

In which of the following is an electromagnet used?

Why does a wire through which current flows attract iron pieces?

What is the value of charge when work done is 1760 joules and potential difference is 220 volts?

Four cells, each of voltage `V` across them, are joined in parallel to form a battery. What will be the equivalent voltage of the battery?