Two point charges, Q1-+5.20 nC and Q2-3.10 nC are separated by 33.0 cm (a) What

Question

Two point charges, Q1-+5.20 nC and Q2-3.10 nC are separated by 33.0 cm (a) What is the potential energy of the pair? -4.39e-07 What is the significance of the algebraic sign of your answer? The minus sign means it takes -4.39e-07 J of work done by an external agent to pull the two charges apart from 33.0 to a much larger separation Score: 0 out of 0 Comment (b) what is the electric potential at a point midway between the charges? (Note: Assume a reference level of potential V = 0 at r = co,) Your response differs from the correct answer by more than 10%. Double check your calculations. V

Explanation / Answer

here,

Q1 = 5.2 nC = 5.2 * 10^-9 C

Q2 = - 3.1 nC = - 3.1 * 10^-9 C

sepration , r = 33 cm = 0.33 m

b)

the electric potential at a point midway between them , V = K * Q1 /(r/2) + K * Q2 /(r/2)

V = 9 * 10^9 * 10^-9 * ( 5.2 /0.165 - 3.1/0.165) V

V = 114.5 V

the electric potential at a point midway between them is 114.5 V

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