A straight wire carrying a current of 14 A is bent into a semicircular arc of radius 2 . 2 cm as shown in the figure. The magnetic field produced by the current at the centre O of the arc is ____ × 10 – 4 T

Question

A straight wire carrying a current of 14 A is bent into a semicircular arc of radius 2 . 2 cm as shown in the figure. The magnetic field produced by the current at the centre O of the arc is ____ × 10 – 4 T,

MARKS App · Accepted Answer

It is given that i = 14 A R = 2 . 2 × 10 - 2 m The magnetic field at the centre O is B = μ 0 i 4 R = 4 π × 10 - 7 × 14 4 × 2 . 2 × 10 - 2 = 2 × 10 - 4 T

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