True and False: 4 Points Each Any answerS NOT recorded on the Scantron answer pa

Question

True and False: 4 Points Each Any answerS NOT recorded on the Scantron answer page will NOT be counted 1. Electric field lines start on positive charges and end on negative charges (arrows point to negative). A) True or B) False The units of electrie potential differences are volts. A) True or B) False The electrostaticforce between two electrons is attractive. A) True or B) False 2. 3· 4. A charge is placed on a balloon by rubbing it with wool. The balloon will have a positive charge on it, and the wool will have a negative charge on it. A) True or B) False 5. A dielectric material is used between the plates of a capacitor to decrease the capacitance of the capacitor (from its vacuum value). A) True or B) False The direction of comventional current in a circuit is the direction that positive charges move through the 6. circuit. A) True or B) False 7. In an isolated system charge is conserved. A) True or B)False The net electric force does no work as a charge moves on an equipotential surface. A) True or B) False

Explanation / Answer

Below I have written the correct statements and have stated whether the questions given are true or false.

1)electric field lines start on positive charges and end on negative charges

A) True

2) The units of potential difference are volts

A) True

3) The electrostatic forces between two electrons is NOT attractive. It is repulsive

B) False

4) When a balloon is rubbed with wool, the electrons to move from the wool to the balloon's surface and hence balloon becomes negatively charged and wool becomes positively charged.

B) False

5) The dielectric mmaterial is used to increase the capacitance.

B) False

6) Direction of current is direction of positive charges

A) True

7) In an isolated system, charges are conserved

A) True

8) Electric force does no work as charges move on equipotential surface

A) True

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