Question

A long wire is bent into the shape shown in figure without cross contact at P. The radius of the circular section is R. If current i flows through the wire, then the magnetic field at the centre C is-

• A. (µ₀i/2R) (1 + 1/p) out of page
• B. (µ) ₀i/2R) (1 + 1/p) into the page
• C. (µ₀i/2R) (1 – 1/p) out of page
• D. (µ₀i/2R) (1 – 1/p) into the page

Answer 1

Answer: (A)

(µ₀i/2R) (1 + 1/p) out of page

Answer 2

$\overrightarrow { \mathrm { B } } _ { \text {wire } } = \frac { \mu _ { 0 } \mathrm { I } } { 2 \pi \mathrm { R } } \odot$

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