1.1 x 10-1J
5.5 x 10-2J
1.1 x 10-4J
5.5 x 10-8J
Correct answer is B
e = 4FIYπd2=4×11×10×27×103×3.14(2×10−2)2
= 0.001m
E = 12Fe=12×110×0.001
= 5.5 x 10-2J
Which of the following statements is not true? ...
Electrons passing through crystals are diffracted because they ...
Images formed by a convex mirror are always ...
In alternating current circuit at resonance, the angle of lead or lag is?...
Which device does NOT make use of the magnetic effects of an electric current? ...
If a wire 30 cm long is extended to 30.5 cm by a force of 300 N. find the strain energy of wire...
Which of the following types of waves cannot travel through a vacuum? ...