PHYSICS 2220-EXAM 3 Each multi Your work must be shown on problems 6-11 in order

Question

PHYSICS 2220-EXAM 3 Each multi Your work must be shown on problems 6-11 in order to receive credit for these problems. Be sure to include appropriate units on your answers! iple-choice question is worth 2 points, questions 6-9 are worth 5 points each, and questions 10-11 are worth 10 points. 1 An electron is placed midway between points A and B. The potential at point A is -20 V, and the potential at point B is+20 V. The potential at the midpoint is O V. The electron will remain at rest. move toward point A with a constant velocity move toward point B with a constant Velocity accelerate toward point A. accelerate toward point B. The circuit below contains three light bulbs and a capacitor. E 110V. The capacitor is fully charged. Which light bulb(s) is(are) dimmest? b. B d. A and B They are all equally dim. abalad 4 to are connected to a battery as shown. Si and S2 are

Explanation / Answer

1. a. Remain at rest.

Explanation: Since the points has same potential, Attractive force will act towards Point B, And repulsive force is acting towards Point A, Which keeps the electron to remain statiinast since it kept exactly midway between the two points.

2. d. They all are equally Dim.

Explanation: Till the time of charging the capacitor, there will be the presence of current flow on the circuit. Till that, all light bulbs will glow bright. Once the capacitor got fully charged, there will be no presence of cirrecuglow in the circuit, which causes the light bulbs to glow as dim.

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