Physics, asked by abd860, 1 year ago

plzz answer this....​

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Answered by utsavmjoshi
2

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
utsavmjoshi: this is formula
utsavmjoshi: u can get its derivation
utsavmjoshi: mark me brainliest
abd860: i did sir
abd860: thank u
utsavmjoshi: dont call me sir i am 17
Answered by hackstar742
1

r₂ = n²*r₁

= 3²*3

=27 Ω

abd860: what is that formula?
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