Question

How many electrons must be removed from a pith ball to give it a charge of 6.4 × 10^-12 C​

Answer 1

Answer:

Using concept of quantisation of charge,

Using concept of quantisation of charge,Q = n e

Using concept of quantisation of charge,Q = n e6.4 ×10^-12 = n × 1.6 × 10^-19

Using concept of quantisation of charge,Q = n e6.4 ×10^-12 = n × 1.6 × 10^-19n = 6.4 ×10^-12 / 1.6 × 10^-19 = 4 × 10^7