A positive and a negative charge are initially 50 mm apart. When they are moved close together so that they are now only 10 mm apart, the force between them will be
A. 5 times smaller than before
B. 5 times greater than before
C. 10 times greater than before
D. 25 times larger than before
Answer:D
A positive and a negative charge are initially 50 mm apart. When they are moved close together so that they are now only 10 mm apart, the force between them will be
A. 5 times smaller than before B. 5 times greater than before C. 10 times greater than before D. 25 times larger than before