Please answer with short explanation if necessary, thank you! 1. A balloon acqui

Question

Please answer with short explanation if necessary, thank you!

1. A balloon acquires a negative charge when rubbed on a sweater. As a result, the charge acquired by the sweater is a. Negative b. Zero c. Positive 2. Which of the following is the correct representation of the electric field created by two positive charges? A. C. D. 3. A neutral object a. b. c. d. Is identical to an insulator Has no charge of either sign. Has no net charge Is not attracted to a charged rod. 4. A tiny styrofoam ball is suspended on a thread. Some tests show it gets attracted to a positively charged rod, and repelled by a negatively charged rod. What can you can conclude about the tiny styrofoam ball? a. It has a negative net charge b. It has zero net charge c. It has positive net charge d. Its net charge changes when then rods are placed near it Which one of the following quantities is equivalent to 1 ? a. 1 J/s d. 1 VIA

Explanation / Answer

1.Positive due to charge conservation

2.C (from positive charge electric field is radially outwards)

3.C

4.a (same charge repels each other and opposite attaracts)

5.D ( V=IR)

6.a (F=QE)

7.b (E=-dV/dx)

8.b (U is inversely prop. to 1/r)

9.d

10.c

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