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19 Feb 2009 23:19:25 IST

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Carnival-KCET-Jan09-9973 Physics - Is this solution correct?

None

Q. 53

A cell is connected between the points A and C of a circular conductor PQRS of centre O with angle POR = 60^o. If B1 and B2 are the magnitudes of the magnetic fields at O due to the current in PQR and PSR respectively, then the ratio of

will be

0.5


Correct Answer: 1 Solution: (1) Acute angle POR = 60^o is given According to the Biosawast law, the magnetic field at centre O is directly proportional to the current carrying segment. Hence

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vignesh the cooler version of newton

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21 Feb 2009 20:08:28 IST

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hey.. i guess answer is wrong... it must be -1 ...i.e both are in opposite directions.. according to biot savart law, magnetic feild also depends on the current in the current carrying segment

niti agrawal

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21 Feb 2009 20:16:20 IST

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the ans shud be 1 bcoz dey r asking magnitude of B n not vectorB. hence 1 is correct

rate if useful....

rumki chakraborty

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21 Feb 2009 20:28:00 IST

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i think the direction of current thru PSR is incorrect, it should be in the -> PSR direction and not in RSP direction.

and then what vignesh said would be true, and answer is ok (= option 1)

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