PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoA 4 resistance wire is doubled on it. Calculate the new resistance of the wire.
[Note: Enter the answer as a whole number].
When a wire is doubled on it, its length would become and area of cross-section would . Hence,
Length, \(l\) \(=\)
Area of cross-section, \(A\) \(=\)
The formula to find the resistance is
The value of resistance is given as
On simplifying the values, we get
The value of \(R_1\) \(=\)