The resistance of a wire is 5 ohm at `50^@C` and 6 ohm at `100^@C`. The resistance of the wire at `0^@C` will be

Options

A. `1 ohm`
B. `2 ohm`
C. `3 ohm`
D. `4 ohm`

Answer

D

Explanation

(d) `(R_(1))/(R_(2)) = ((1 + alpha t_(1)))/((1 + alpha t_(2))) implies (5)/(6) = ((1 + alpha xx 50))/((1 + alpha xx 100)) implies alpha = (1)/(200) per^(@)C`