If $10^{9}$ electrons move out of a body to another body every second. how much time is required to get a total charge of $1 \,C$ on the other body?
$100 \;years$
$200 \;years$
$250 \;years$
$300 \;years$
A charged gold leaf electroscope has its leaves apart by certain amount having enclosed air. When the electroscope is subjected to $X$-rays, then the leaves
How can the neutral body be charged electrically ?
If a body is charged by rubbing it. Its weight
Which is the instrument to detect the charge on the body ? Explain it with diagram.
What is earthing or grounding in household electrical circuit ?