Iii Practice 1 0 X 10c A Two Point Charges Are Placed 20 Cm Apart They Are Fixed In Place So That They Do Not Move 1 (41.45 KiB) Viewed 51 times
Iii Practice 1 0 X 10c A Two Point Charges Are Placed 20 Cm Apart They Are Fixed In Place So That They Do Not Move 2 (21.59 KiB) Viewed 51 times
III. Practice . 1.0 x 10c A. Two point charges are placed 20 cm apart. They are fixed in place so that they do not move. Show your work for each part of the question below 20 cm 1. A small charge of 3.0 x 10°C is placed at point A. The ball is small enough that it can be treated as a point 1.0 cm charge a) What is the electric field at point A (both magnitude and direction) -20 x 10 b) What is the net electric force exerted on the ball? 2. How would your answers to (a) and (b) of part I change if the ball had a charge of - 3.0 x 10°C. Explain 3. How would your answers to 1 and 2 of part A change if the ball had zero net charge? Explain. B. Three point charges (A, B, &C) are equally spaced along a line. Electric field lines around the charges are shown at right 1. One field line has an arrow on it to represent the direction of the force exerted on a positive test charge at any point on that line. Draw appropriate arrows on each of the other lines. 2. What do the field lines suggest about the approximate relative magnitudes of the three charges? Include information about the relative signs of the charges in your answer. Explain your reasoning.
3. Points 1, 2 and 3 are all equally far from charge B. Rank the electric field at those points in order of magnitude. (If the magnitude of the electric field is the same at two points, indicate that explicitly.) Explain your reasoning. 4. A positive test charge is moved along a straight line from A to B. Describe qualitatively how the force exerted by the electric field on that test charge would change as it moves along that
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