Electronics and Communication Engineering - Electronic Devices and Circuits - Discussion
Discussion Forum : Electronic Devices and Circuits - Section 11 (Q.No. 10)
10.
The resistance of a metallic wire would
Discussion:
6 comments Page 1 of 1.
Saurabh kumar said:
4 years ago
Option A should be right.
Shanmukha said:
6 years ago
R is inversely proportional to conductivity.
Clyde Maverick said:
6 years ago
The correct answer is A.
To prove it mathematically, resistance is equal to the resistivity times the length all over the area.
At high frequencies, skin effect occurs, decreasing the effective area.
Dividing by a smaller area gives us a greater resistance.
To prove it mathematically, resistance is equal to the resistivity times the length all over the area.
At high frequencies, skin effect occurs, decreasing the effective area.
Dividing by a smaller area gives us a greater resistance.
Rommel said:
7 years ago
The answer should be A. This can be attributed to the skin effect. As the frequency of a signal increases, electrons tend to move towards the surface of the wire. Hence, the effective area decreases, and the resistance increases.
Sankar said:
7 years ago
Please explain it.
Mukund said:
8 years ago
How it happen? Explain.
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