Official PYQ · 2019Set 1 · Q36MCQ2 marks

GATE EC 2019 Set 1 Q36 — Electronic Devices

Two identical copper wires $W1$ and $W2$ placed in parallel as shown in the figure, carry currents $I$ and $2I$ , respectively, in opposite directions. If the two wires are separated by a distance of $4r$ , then the magnitude of the magnetic field $\overrightarrow{B}$ between the wires at a distance $r$ from $W1$ is

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Answer: C

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Published 10 Oct 2026

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