Dear Student,

for the above purpose, an electrometer can be used. An electrometer is a device which is an electrical instrument used for measuring electric charge or the electric potential difference.

Hi Aspirant,

You can use Electrometer while calculating the charges accumulated in materials.It is an an instrument for measuring electrical potential without drawing any current from the circuit. There are many different types, ranging from historical handmade mechanical instruments to high-precision electronic devices.

Hope it helps!!