Consider a coin of Question 20. ft is electrically neutral and contains equal amounts of positive and negative charge of magnitude 34.8 kC. Suppose that these equal charges were concentrated in two point charges separated by
(i) 1 cm — (1/2 x diagonal of the one paisa coin)
(ii) 100 m (~ length of a long building)
(iii) 106 m (radius of the earth). Find the force on each such point charge in each of the three cases. What do you conclude from these results?
Consider a coin of Question 20. ft is electrically neutral and contains equal amounts of positive and negative charge of magnitude 34.8 kC. Suppose that these equal charges were concentrated in two point charges separated by
(i) 1 cm — (1/2 x diagonal of the one paisa coin)
(ii) 100 m (~ length of a long building)
(iii) 106 m (radius of the earth). Find the force on each such point charge in each of the three cases. What do you conclude from these results?
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1 Answer
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This is a Short Answer Type Questions as classified in NCERT Exemplar
Explanation- (i) F= = 9 109 (34.8 103)2/ (10-2)2=1.09 1023N
(ii) F= = 9 109 (34.8 103)2/ (100)2=1.09 1015N
(iii) F= = 9 109 (34.8 103)2/ (106)2=1.09 107N
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