The resistance of three parts of a circular loop are as shown in the figure. The magnetic field at the centre O is

$\frac{μ_{0} I}{6 a}$
$\frac{μ_{0} I}{3 a}$
$\frac{2}{3} \frac{μ_{0} I}{a}$
zero

The correct answer is: zero

An infinitely long conductor has a circular loop as shown in the figure. A current of 5A flows through the conductor. Find the radius of loop if the intensity of magnetic field at its centre is $4.1 cross times 1 0 to the power of negative 2 end exponent T$

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The resistance of three parts of a circular loop are as shown in the figure. The magnetic field at the centre O is

zero

The correct answer is: zero

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$\frac{μ_{0} I}{6 a}$
$\frac{μ_{0} I}{3 a}$
$\frac{2}{3} \frac{μ_{0} I}{a}$
zero

An infinitely long conductor has a circular loop as shown in the figure. A current of 5A flows through the conductor. Find the radius of loop if the intensity of magnetic field at its centre is $4.1 cross times 1 0 to the power of negative 2 end exponent T$

An infinitely long conductor has a circular loop as shown in the figure. A current of 5A flows through the conductor. Find the radius of loop if the intensity of magnetic field at its centre is $4.1 cross times 1 0 to the power of negative 2 end exponent T$