Physics
Work out the capacitance of the copper balls in the drawing below.
A capacitor with an air gap has a capacitance of 0.90 μF and a separation distance of 3.0 mm between its plates. If each plate carries a charge of 88 μC, determine the strength of the electric field between the plates.
Determine the charge on each metal plate measuring 3.0 cm × 3.0 cm, placed 2.0 mm apart and connected to a 12 V battery. Also, find the potential difference between them.