(i). Magnetic field lines never intersect because at the point of intersection, the magnetic field would have two different directions, which is not possible.
(ii). A uniform magnetic field is represented by parallel and equally spaced straight lines. This indicates that the field strength and direction are the same at every point.
Consider the following statements:
A. The junction area of a solar cell is made very narrow compared to a photodiode.
B. Solar cells are not connected with any external bias.
C. LED is made of lightly doped p-n junction.
D. Increase of forward current results in a continuous increase in LED light intensity.
E. LEDs have to be connected in forward bias for emission of light.