Question

How many electrons must be transferred from an object to produce a charge of 1.15 c? (express your answer to three significant figures.)?

Answer 1

To produce a charge of 1.15 Coulombs in an object, we need to transfer = 1.15/(charge on an electron) number of electrons

   As we know that, total charge on an electron = 1.60217662 Ă— 10 ^-19 coulombs
    Hence, number of electrons required to move = 1.15/(1.60217662 Ă— 10 ^-19) = 0.71777 x 10^19 electrons, i.e. 7.17 x 10^18 electrons upto 3 significant figures