Two long straight wires are set parallel to each other. Each carries a current i in the same direction and the separation between them is 2r. The intensity of the magnetic field midway between them is

\frac{μ_{0} i}{r}

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\frac{4 μ_{0} i}{r}

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Zero

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\frac{μ_{0} i}{4 r}

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Solution

The correct option is C Zero

At $P \Rightarrow B_{n e t} = B_{1} - B_{2}$
Since $| B_{1} | = | B_{2} |$
So, $B_{n e t} = 0$

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Two long straight wires are set parallel to each other. Each carries a current i in the same direction and the separation between them is 2r. The intensity of the magnetic field midway between them is

The correct option is C Zero At P⇒Bnet=B1−B2 Since |B1|=|B2| So, Bnet=0

The correct option is C Zero

At $P \Rightarrow B_{n e t} = B_{1} - B_{2}$
Since $| B_{1} | = | B_{2} |$
So, $B_{n e t} = 0$