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Physics
Physics
Problem
Two wires P and Q are made of the same material. Wire P is 1 m long with radius 0.3 mm, while wire Q is 2 m long with radius 0.6 mm. What is the ratio of their resistances
R
P
:
R
Q
R_P : R_Q
R
P
:
R
Q
? a)
1
:
2
1 : 2
1
:
2
b)
1
:
1
1 : 1
1
:
1
c)
2
:
1
2 : 1
2
:
1
d)
4
:
1
4 : 1
4
:
1
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