Electricity: Static Electricity
Static Electricity: Audio Guided Solution
Two charges are separated by a distance of 40 cm. Q1 has a charge of -4.5 nC and Q2 has a charge of +9.1 nC. (GIVEN: 1 C = 109 nC.)
Determine the location where the net electric field is 0 N/C. Express your answer as an x-coordinate location (in cm), with Q1 being located at x=0 cm and Q2 being located at x = +40 cm (as shown in the diagram).
Audio Guided Solution
Habits of an Effective Problem Solver
Read the problem carefully and develop a mental picture of the physical situation. If necessary, sketch a simple diagram of the physical situation to help you visualize it.
Identify the known and unknown quantities; record them in an organized manner. A diagram is a great place to record such information. Equate given values to the symbols used to represent the corresponding quantity - e.g., Q1 = 2.4 μC; Q2 = 3.8 μC; d = 1.8 m; Felect = ???.
Use physics formulas and conceptual reasoning to plot a strategy for solving for the unknown quantity.
Identify the appropriate formula(s) to use.
Perform substitutions and algebraic manipulations in order to solve for the unknown quantity.
Read About It!
Get more information on the topic of Static Electricity at The Physics Classroom Tutorial.
Return to Problem Set
Return to Overview
View Audio Guided Solution for Problem: