1.

A student plots V-I graphs for three samples of nichrome wire with resistances R_1, R_2 and R_3.Choose from the following the statement that holds true for this graph.

Answer»

`R_1 = R_2 = R_3`
`R_1 gt R_2 gt R_3`
`R_3 gt R_2 gt R_1`
`R_2 gt R_1 gt R_3`

Solution :`R_2 gt R_1 gt R_3`
[Hint : SLOPE of I-V GRAPH GIVES the VALUE of `1/R`.]


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