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The voltage-current graphs for two resis...

The voltage-current graphs for two resistor of the same material and the same radius with lengths, `L_1 and L_2` are shown in fig 5.2. if `L_1 gt L_2`, state with reason which of these graphs represents voltage- current change of `L_1.`

Text Solution

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As `R_A = V//I_A` and `R_B = V//I_B`
`(I_A)/(I_B) = (R_B)/(R_A)`
From Fig . 5.2 as `I_A gt I_B, R_B gt R_A.` Since R prop L, graphs B` represents the voltage current change for `L_1`.
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