plzz answer this....
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here wire is streched 3 timesthan its original length (30/10)
new resisitance = (times streched)² * original resistance
= 3*3*3
=27Ω
abd860:
i dint get it . imean i dint understand
this is formula
u can get its derivation
mark me brainliest
i did sir
thank u
dont call me sir i am 17
Answered by
1
r₂ = n²*r₁
= 3²*3
=27 Ω
what is that formula?
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