Question

Problem 3: Two equal charges g.-9-2x 10-6 C are located at z 0, V-0.3 m and z 0, V 0.3 m respectively. What are the magnitude and direction of the total electric force that q and g exert on a third charge 4.0 x 10 C located at 0.4 m, y 0m? Problem 4: What is the magnitude of the electric field E at a Geld point 2.0 m from a point charge q 4.0 x 10-9 C? Problem 5: When the terminals of a battery are connected to two parallel conducting plates with a small gap between them, the resulting charges on the plates produce a nearly uniform electric field E between the plates. Assume that positively charge plane is a lower one and negatively charged plane is an upper one, so the field E is pointing upward. The magnitude of the electric field is known to be闳 1 x 104 N/C (a) If an electron (charge-e=-1.6 x 10-9 C and mass m-9.1 x 10-31 kg) is released from the rest at the upper plate, what is its acceleration? (b) What speed and kinetic energy does it acquire while traveling 1.0 cm to the lower plate Problem 6: Charge Q is uniformly distributed on a ring of radius R. Find an electrie field at a point P on the ring symmetry axis at a distanceエfrom its center.

Answer 1