“In lightning in the sky,there is a steady flow of charge”. -True or False?

Define electric current when there is no steady flow of charge.

$A$ steady current $i$ is flowing through a conductor of uniform cross-section. Any segment of the conductor has

The following figure shows four situations in which positive and negative charges move horizontally through a region and gives the rate at which each charge moves. Rank the situations according to the effective current through the region,greatest first.

If an electron revolves in a circular path of radius $0.5 \times 10^{-10} \ m$ at a frequency of $5 \times 10^{15} \ Hz$,the electric current in the circle is .................. $mA$. (Charge of an electron $= 1.6 \times 10^{-19} \ C$)

The quantity of charge that will be transferred by a current flow of $20 \text{ A}$ over a period of $1 \text{ hour } 30 \text{ minutes}$ is: