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  • Two parallel long straight conductors are placed at right angles to a meter scale at the 2 cm and 6 cm marks. They carry currents I and 3 I respectively in the same direction. The resultant magneti

Two parallel long straight conductors are placed at right angles to a meter scale at the 2 cm and 6 cm marks. They carry currents I and 3 I respectively in the same direction. The resultant magnetic field due to them is zero

Option: 1

at the 3cm mark
 


Option: 2

at the 4cm mark


Option: 3

at the 5cm mark
 


Option: 4

nowhere


Answers (1)

best_answer

\frac{\mathrm{I}}{\mathrm{x}_1}=\frac{3 \mathrm{I}}{\mathrm{x}_2} \Rightarrow \mathrm{x}_2=3 \mathrm{x}_1 \\
\mathrm{x}_1+\mathrm{x}_2=4 \\

\mathrm{x}_1=1,2+1=3 \mathrm{~cm} .
 

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mansi

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