Two infinitely long current carrying conductors are in X-Y plane paral – InterviewSolution

1.	Two infinitely long current carrying conductors are in X-Y plane parallel to y-axis at x = - a and x = + a as shown in the figure. The currents in A and B vary with time as iA=αt and iB=αt. Taking the direction of magnetic field into account select the correct variation of B at origin 'O' with time 't'.(α is a +ve constant)
Answer» Two infinitely long current carrying conductors are in X-Y plane parallel to y-axis at x = - a and x = + a as shown in the figure. The currents in A and B vary with time as $i_{A} = α t$ and $i_{B} = \frac{α}{t}$ . Taking the direction of magnetic field into account select the correct variation of B at origin 'O' with time 't'.( $α$ is a +ve constant)

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