Two coils made of same material are having resistance 5 Ω and 15 Ω respectively.
Which one will have more resistivity if the first wire has length 2 m and second
wire has length 3 m ? (Assume area of cross section of both wires to be 1 m^2
Two coils made of same material are having resistance 5 Ω and 15 Ω respectively.
Which one will have more resistivity if the first wire has length 2 m and second
wire has length 3 m ? (Assume area of cross section of both wires to be 1 m2
).).
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1
Answer:
As we know,
R=ρ×
A
l
Then
R
B
R
A
=
A
A
A
B
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