A 6ohm resistance wire is doubled on itself . Calculate the new resistance of the wire itself .
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Answer:-
New Resistance
• Given:-
Resistance = 6 Ω
Wire is doubled on itself.
• To Find:-
New resistance of the wire.
• Solution:-
We know,
here,
R = resistance
p = resistivity of wire
l = length of the wire
A = area of cross section of the wire.
Substituting in the value:-
→
Given that, the wire is doubled.
hence,
• New Area A' = 2A
Now, the area is doubled therefore the length of the wire will become half.
• New length l' = l/2
Substituting in the Formula:-
→
→
→
→
→
→
→
✧
Therefore, the new resistance of the wire will be 1.5Ω .
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