PhysicsLAB Practice Problems
Basic Electrostatics

Directions: On this worksheet ...

Question 1  Who originally named the electric charges?
Question 2  A nonconductor is charged and then brought near a conductor. Consequently
Question 3  If the charge on each of two identical tiny spheres is changed to a value that represents a factor of 4 times their original charge while their separation is decreased to a distance that represents a factor of 1/7 their original separation, what will be the new force of interaction?
Question 4  By roughly how much does the mass of a copper object change when, upon being stroked with a piece of woolen cloth, it acquires an excess charge of -4 µC?
Question 5  Which of the following statements is NOT true when comparing electrical forces and gravitational forces?
Question 6  Which of the following demonstrations was not a result of charge polarization?
Question 7  Two isolated charges, +q and -2q, are 2 centimeters apart. If F is the magnitude of the force acting on charge -2q, what are the magnitude and direction of the force acting on charge +q?
Question 8  Two identical, positive point charges repel each other with force 0.33 N when their separation is 1.1 m. How large is each charge?
Question 9  Which of the following statements is NOT true when comparing electroscopes charged by induction and conduction?


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