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1) a negative point charge of 2.0 × 10^–6 c experiences a force of 0.060 n from another source charge. what is the strength of the electric field, and how does its direction compare with the force?

a) 3.0 × 10^4 n/c, same

b) 3.0 × 10^4 n/c, opposite < < < <

c) 1.2 × 10^3 n/c, same

d) 1.5 × 10^4 n/c, opposite

2) two point charges of +2.50 × 10^–5 c and –2.50 × 10^–5 c are separated by 0.50 m. which of the following describes the force between them?

a) 45 n, attractive

b) 23 n, attractive

c) 90 n, attractive < < < <

d) 90 n, repulsive

3) two parallel plates have an electric potential difference of 20.0 v. if the electric field between them has a strength of 1.0 × 10^3 n/c, then how far apart are the plates?

a) 1.0 cm

b) 2.0 cm < < < < < < <

c) 10.0 cm

d) 5.0 cm

4) an electric field measured near a point charge of 3.00 × 10^–6 c has a strength of 1.50 × 10^5 n/c. how far is the point from the source charge?

a) 0.42 m

b) 0.36 m < < < < <

c) 0.095 m

d) 0.30 m