CUET Preparation Today
Case : Read the passage and answer the following question(s). The electrostatic force on a small sphere of charge 0.4 µC due to another small sphere of charge –0.8 µC in air is 0.2 N. |
What is the distance between the two spheres? |
12 cm 3.2 N 6 cm 26 cm |
12 cm |
F = kq1q2/r2 r2 = kq1q2/F F = 0.2 N ; q1 = 0.4 µC ; q2 = – 0.8 µC r = 12 cm |
