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Q. An inflated rubber balloon is rubbed with a wool cloth until an excess of 1.5 multiplied by 109 electrons is on the balloon. What is the magnitude of the charge on the balloon?

Q. An electron moving parallel to the x axis has an initial speed of 3.70 × 106 m/s at the origin. Its speed is reduced to 1.40 × 105 m/s at the point x = 2.00 cm. Calculate the potential difference between the origin and that point. Which point is at the higher potential?

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Category:- Physics
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