Exercise 23.24 At a certain distance from a point charge, the potential and elec

Question

Exercise 23.24

At a certain distance from a point charge, the potential and electric field magnitude due to that charge are 4.98 V and 12.0 V/m, respectively. (Take the potential to be zero at infinity.)

Part A

What is the distance to the point charge?

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Part B

What is the magnitude of the charge?

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Part C

Is the electric field directed toward or away from the point charge?

Exercise 23.24

At a certain distance from a point charge, the potential and electric field magnitude due to that charge are 4.98 V and 12.0 V/m, respectively. (Take the potential to be zero at infinity.)

Part A

What is the distance to the point charge?

d = m

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Part B

What is the magnitude of the charge?

q = C

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Part C

Is the electric field directed toward or away from the point charge?

Is the electric field directed toward or away from the point charge? Toward Away

Explanation / Answer

part a)

V = kq/r

E = kq/r^2

V/E = r

r = (4.98/12) = 0.415 m

b) q = V*r/K = (4.98*0.415)/(9e9) = 2.29*10^-10

c) away

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