Item 30 Part A What is the electric potential at point A in (Figure 1) ? Express

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Item 30

Part A

What is the electric potential at point A in (Figure 1) ?

Express your answer to two significant figures and include the appropriate units.

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Part B

What is the potential energy of a proton at that point?

Express your answer using two significant figures.

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Figure 1 of 1

Item 30

Part A

What is the electric potential at point A in (Figure 1) ?

Express your answer to two significant figures and include the appropriate units.

VA =

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Part B

What is the potential energy of a proton at that point?

Express your answer using two significant figures.

Uproton =   J  

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Figure 1 of 1

Explanation / Answer

electrical potential due to a charge = kq/r

where q = charge , r = distance

a) electric potential at point A = 9*10^9* 10^-9* (-5/0.04 + 5/0.02 + 10 /sqrt(0.04^2+0.02^2))

= 3137.46 V

b) potential energy = qV = 1.6*10^-19 *3137.46 = 5.02*10^-16 J

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