Answer the question number 24 by an expert Appendices
What is the basic difference
21. An inductor -
of resistance R - IOQ. A source Of is
(i) reactance.of the coil (ii) impedance Of Circuit
Explain briefly with the help ofa labelled diagram the principle
22. What are unpolarised and linearly polarised light waves? Establish
Or
Establish the following relation
n,
23, Draw a common-emitter amplifier circuit using an n-p-n transistor and explain
action. Find an expression for a.c. voltage gain.
Or
What is a photodiode? Explain its working principle. What is a solar cell?
