When an electron moves, it produces both an electric field and a magnetic field. The electric field is produced due to the charge of the electron, while the magnetic field arises from the motion of the electron. This is a fundamental principle of electromagnetism, where a moving charge generates both types of fields.
The electric field is radially outward from the charge, and the magnetic field forms concentric circles around the path of the moving charge.
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.