Four identical metallic objects carry the followingcharges: +2.6 µC, +5.8 µC, -4

Question

Four identical metallic objects carry the followingcharges: +2.6 µC, +5.8 µC, -4.2 µC,and -6.4 µC. The objects are broughtsimultaneously into contact, so that each touches the others. Thenthey are separated. (1 µC = 1*10-6 C) (a) What is the final charge on each object?

µC

(b) How many electrons (or protons) make up the final charge oneach object?
---Select---protonselectrons
(a) What is the final charge on each object?

µC

(b) How many electrons (or protons) make up the final charge oneach object?
---Select---protonselectrons

Explanation / Answer

Charges q = 2.6 uC

           Q ‘ = 5.8 uC

            Q “ = -4.2 uC

            Q = -6.4 uC

When they are contact each other then charge on each objectq’ = ( q + Q + Q’ + Q” ) / 4

                                                                          q’ = -0.55 uC

                                                                               =-0.55*10^-6C

So, No.of electrons on each n = q’ / e

Where e = charge of electron = 1.6 * 10 ^ -19 C

Plug the values weget   n = 3.4375 * 10 ^ 12           

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