Physics · 2015
JEE Main · 11 April 2015, Shift 1 · Q19
Two long straight parallel wires, carrying (adjustable) currents I_1 and I_2, are kept at a distance d apart. If the force 'F' between the two wires…
Two long straight parallel wires, carrying (adjustable) currents $\displaystyle \mathrm{I}_1$ and $\displaystyle \mathrm{I}_2$, are kept at a distance d apart. If the force 'F' between the two wires is taken as 'positive' when the wires repel each other and 'negative' when the wires attract each other, the graph showing the dependence of 'F', on the product $\displaystyle \mathrm{I}_1 \mathrm{I}_2$, would be :
Official answer
(4)
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JEE Main 2015 Physics question, with the answer from NTA’s final answer key. Where our answers come from.