A wire carries a current I ampere in a semicrcle. The semicircle has a radius r. The magnetic field at the centre C will be : (A) zero
(B) πΙ/r * 10-7 Newton/ampere-metre
(C) πl/r Newton/ampere-metre (D) πl/r gauss
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(B) πΙ/r * 10-7 Newton/ampere-metre
(C) πl/r Newton/ampere-metre (D) πl/r gauss
Answer with explanation
No useless information
Good answers =brainliest
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