Three Point Charges, Two Positive and One Negative, Each Having

question 65

Multiple Choice

Three point charges, two positive and one negative, each having a magnitude of 20 μC are placed at the vertices of an equilateral triangle (30 cm on a side) . What is the magnitude of the electrostatic force on one of the positive charges?

• A) 69 N
• B) 40 N
• C) 80 N
• D) 57 N
• E) 20 N

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Definitions:

Supply Curves

Graphical representations showing the relationship between the price of a good and the quantity of that good that suppliers are willing and able to sell, holding other factors constant.

Long Run

A period in economics in which all factors of production and costs are variable, allowing all inputs to be adjusted.

Perfectly Inelastic

A situation where demand does not change at all in response to changes in price.

Quantity Supplied

The total amount of a good or service that producers are willing and able to sell at a certain price over a specified period.