Multiple Choice, True or False, and Matching (40 points total) A. Multiple Choic

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Multiple Choice, True or False, and Matching (40 points total) A. Multiple Choice. Place the best answer on the line next to the question. (16 pts) 1. Charge A and charge B repel each other. Charge B and charge C attract each other. What will charge A and charge C do? A) attract each other C) nothing B) repel each other D) need to know the signs of the charges first. 2. Which of the following is false about electric field lines? A) The spacing between lines decreases at points farther from a point charge. B) The electric field lines of a dipole are straight lines going away from the charges C) The electric field is tangent to the field line at a point. D) The electric field lines start on a positive charge and ends on a positive charge. 3. One conductor has a charge of +5q and another has a charge of 9 q. The conductors touch and then separate. What is the final charge on cach conductor? A)-4q B) -2q C) +4q 4. Which of the following is a step in charging a conductor by induction? A) Ground the conductor B) Touch the conductor with the charged object C) Rub two objects together. D) All of these 5. A negative charge is placed on a point on an equipotential line. The charge is released and A) will move parallel to the equipotential line. B) will stay at that point C) will move toward a line at higher potential. D) will move toward a line at lower potential. --. A positive charge moves in the opposite to the electric field. The charge's potential energy will A) increase B) decrease C) stay constant D) can't determine 7. Which of the following would decrease the capacitance of a parallel plate capacitor? A) increasing the area of the plates. C) inserting a dielectric. B) increasing the plate separation. D) all of these. 8. A charge of +2 HC and -4uC are in the same region of space. Which of the following will increase the electric potential energy of the charges? A) moving closer together B) moving farther apart. C) both of these D) Neither of these

Explanation / Answer

here,

A)

1)

charge A and B repel each other

so, they have same charges

and B and C attract each other then they have opposite charge

then A and C also have opposite charges

so they attract each other

the correct option is A)

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