Question

Two bodies A and B carry charges -3.00C
and -0.44 C. How many ē should be
transfer from A to B so that they acquire
equal charges.
​

Answer 1

Given :

Charge 1 (q₁) = -3C

Charge 2 (q₂) = -0.44C

To Find :

Number of electrons that should be transfered from A to B

Solution :

• Body A has -2.56 excess charge than A.So to have equal charge among two bodies -1.28C of charge should be transfered to B

• The charge on one electron is -1.6 ×10⁻¹⁹ C

• Number of electrons required to transfer a charge of  -1.28C

       =  -1.28 /  -1.6 ×10⁻¹⁹ C

       =  8× 10¹⁸ electrons

Number of electrons that should be transfered from A to B are 8× 10¹⁸ electrons

Answer 2

Answer:

The electrostatic force between two charges q = 2e and q = 2e , separated by a distance r is , F = K 2e × 2er2 = K4e2/r2 ,after transfer of charge , new