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?
$100 \;years$
$200 \;years$
$250 \;years$
$300 \;years$
Charge on $\alpha $ - particle is
What is the meaning of addition of charges ?
What is called polarity of electric charge ?
What is called electrostatics ?
From what the name electricity is coined ? Explain its meaning.