A solenoid is 1.5m long and its inner diameter is 4.0cm. It has three layers of windings of 1000 turns each and carries a current of 2.0 amperes. The magnetic flux for a cross-section of the solenoid is nearly.
A
2.5×10−7weber
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B
6.31×10−6weber
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C
5.2×10−5weber
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D
4.31×10−5weber
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