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Set 1 3 Physical Foundations Ii Electrical Force Potential Capacitance And Current

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Question 1

(Multiple Choice)

Free
The electrical potential around a negative charge is

A) Negative and proportional to the charge
B) Negative and proportional to the square of the charge
C) Positive and proportional to the charge
D) Positive and proportional to the square of the charge
E) Negative and proportional to the inverse square of the distance.

Answer

Question 2

(Multiple Choice)

Free
The electric force on an ion in solution is

A) qE (q is the charge and E is the electric field intensity)
B) dV/dx (V is the voltage)
C) -dV/dx (V is the voltage)
D) β \beta v (v is the velocity, $ is the drag coefficient)
E) vC (v is the velocity, C is the concentration)

Answer

Question 3

(Multiple Choice)

Free
Increasing the plate separation decreases the capacitance because

A) It takes more energy to separate charge by a greater distance
B) More charge can fit on the plate
C) Less charge can fit on the plate
D) It takes less energy to separate charge by a greater distance
E) The electric field won't be homogenous

Answer