8. A charged piece of invisible tape is brought near your hand, as shown in the

Question

8. A charged piece of invisible tape is brought near your hand, as shown in the Figure 8.1 below Your hand is initially neutral. 10 other jzero magnitude Figure 8.1 Figure 8.2 Figure 8.3 (a) if the tape is negatively charged, which of the diagrams 1-10 in Figure 8.2 best shows the polarization of a neutral molecule in your hand? (b) Which arrow in Figure 8.3 best indicates the direction (a-j) of the electric field at the location of the tape due to the large number of polarized molecules in your hand? (c) Which arrow in Figure 8.3 best indicates the direction (a-j) of the force on the tape due to the polarized molecules in your hand? (d) Which arrow in Figure 8.3 best indicates the direction (a-j) of the force on your hand due to the charged tape? 9. A solid plastic ball has negative charge uniformly spread over its6 surface. Which of the diagrams in Figure 9.1 best shows the polarization of molecules inside the ball? None of Figure 9.1

Explanation / Answer

a)If the yape is neatively charged then at the near potion of hand to the tape positive charge appear and at further neagative one. So, diagram 2 is correct.

b)The direction of electric field is positive to negative Thus, it is represented by g.

c)In this case we are only talking about hand thus the answer will be c.

d)Due to charged tape the direction of force on hand will be g as it will attract the positive charges of hand towards itself.

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