72)
FIGURE 2 30 (a) Work done in a small
step of building charge on conductor 1
from Q¢ to Q¢ + d Q¢ (b)  Total work done
in charging the capacitor may be
viewed as stored in the energy of
electric field between the plates Rationalised 2023-24
Electrostatic Potential
and Capacitance
75
 EXAMPLE 2