# 1. (9 points) Find the electric force between two electrons each with a charge of 1.6 x 10 -19 C if they are located 0.50 m apart. (1 m = 1 x 10 -6

**1. **(9 points) Find the electric force between two electrons each with a charge of 1.6 x 10-19 C if they are located 0.50 μm apart. (1 μm = 1 x 10-6 m). Is this an attractive or repulsive force? Be sure to show all work and use proper scientific notation and significant figures in your answer.

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- (10 points) Find the magnitude of an electric field located 2.00 cm from a source charge of 7.0 nC. (1nC = 1 x 10-9 C).

Will the field lines point toward or away from the source charge? Show your work and include an electric field diagram assuming the source is a point charge.

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- (6 points) What is the electric potential difference of an electron moved 15.00 mm in an electric field if the potential energy changes -2.00 J? Show your work. See question 1 for charge of an electron.

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