Electric Field of Multiple Point-Charges: Three Equal Negative Point Charges

question 16

Multiple Choice

Electric field of multiple point-charges: Three equal negative point charges are placed at three of the corners of a square of side d as shown in the figure. Which of the arrows represents the direction of the net electric field at the center of the square?

• A) A
• B) B
• C) C
• D) D
• E) The field is equal to zero at point P.

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Definitions:

Mean

The average of a set of numbers, calculated by dividing the sum of all the values in the set by the number of values.

Binomial Distribution

A probability distribution that represents the number of successes in a fixed number of independent Bernoulli trials, each with the same probability of success.

Binomial Table

A mathematical table used to determine the probability of obtaining various numbers of successes in a fixed number of trials in a binomial experiment.

Cumulative Probability

This term refers to the probability that a random variable is less than or equal to a specified value.