When ${10^{19}}$ electrons are removed from a neutral metal plate, the electric charge on it is
$-1.6 \,C$
$+ 1.6 \,C$
$10^{+19}\, C$
$10^{-19} \,C$
A girl brings a positively charged rod near a thin neutral stream of water from a tap. She observes that the water stream bends towards her. Instead, if she were to bring a negatively charged rod near to the stream, it will
Which is the instrument to detect the charge on the body ? Explain it with diagram.
The charge on $500\,cc$ of water due to protons will be
Write the law of conservation of charge. Give one example.
A small sphere of radius $r_{1}$ and charge $q_{1}$ is enclosed by a spherical shell of radius $r_{2}$ and charge $q_{2} .$ Show that if $q_{1}$ is positive, charge will necessarily flow from the sphere to the shell (when the two are connected by a wire) no matter what the charge $q_{2}$ on the shell is.