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`        two wires of a and b with circular cross section made up of the same material wih equal lengths.suppose Ra=3Rb,then what is the ratio of the radius of the wire a to that of b?`
6 months ago

Arun
23483 Points
```							 Dear student  R1 = 3 R2 rho * l / A1 = 3 rho * l / A2 A2/ A1 = 3 (r1)^2 / (r2)^2 = 1/3 hence r1 / r2 = 1 / sqrt(3)
```
6 months ago
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