10 of 20 Question 11 of 20 An electron is released from rest in an electric fiel

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10 of 20

Question

11 of 20

An electron is released from rest in an electric field. The electron accelerates vertically upward, traveling 4.50 m in the first 3.00 microseconds (?s) after it is released. What are the magnitude and direction of the electric field?

Question

12 of 20

A charge Q and a charge 3Q are released in a uniform electric field. If the force this field exerts on 3Q is F, what force does it exert on Q?

Question

13 of 20

An electric field of magnitude E is measured at a distance R from a point charge Q. If the charge is doubled to 2Q, and the electric field is now measured at a distance of 2R from the charge, what is the value of the new electric field?

Question

14 of 20

A point charge Q at the center of a sphere of radius R produces an electric flux of ?E coming out of the sphere. If the charge remains the same but the radius of the sphere is doubled, what is the electric flux coming out of the sphere?

Question

15 of 20

You put 250 g of water into the freezer and make ice cubes. Which of the following is true about this process?

a Directly downward b Directly upward c Directly to the right d Directly to the left e Zero

Explanation / Answer

10.

b. directly Upward.

since the net electric field at point P by the two charges in downward direction. a negative charge put into an electric field moves in opposite direction of electric field.

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