1. A test charge of +2x10^-7 C is located 5 cm to the right of a charge of +1x10^-6 C and 10 cm to the left of a charge of -1x10^-6 C. The three charges lie on a straight line. Find the force on the test charge?

Question

2. A charge of -2x10^-9 C in an electric field between two metal plates 4cm apart is acted upon by a force of 10^-4 N. a.) What is the strength of the field? b.) What is the potential difference between the plates?

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Answer 1

1. You have the charges, and the distance between the test charge and each other charge. Tje forces are both to the right.

Find each force, and add.

Answer 2

E=F/q

E=V/d