A. Would the electric field felt by the bead increase, decrease, or stay the sam

Question

A. Would the electric field felt by the bead increase, decrease, or stay the same if
i. the charge on the bead were increased?
ii. the rod was rubbed some more, increasing its charge?
iii. the bead were moved to point D?

B. Would the electric force felt by the bead increase, decrease, or stay the same if
i. the charge on the bead were increased?
ii. the rod was rubbed some more, increasing its charge?
iii. the bead were moved to point D?
C. Again consider the original scenario described before part A. Which of the following quantities, if any can you calculate?
i. the charge on the rod
ii. the electric field that a 25nC particle would feel at point C.
iii. the force that the 10 nC bead at point C exerts on the rod.

Explanation / Answer

A. i. stay the same ii. increase iii. depends on the distance of D from the rod. If distance is less, field increases. if it is more, field decreases. B. i. increase ii. increase iii. same as A. C. i. F = K*q1q2/r^2 0.2 = 9*10^9 * 10*10^-8 * q1 / r^2 cant solve without knowing 'r' ii. 0.2*25/10 = 0.5 N iii. 0.20 N in opposite direction to the force on the bead.

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