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A long solenoid with radius 2 cm carries...

A long solenoid with radius 2 cm carries a current of 2A. The solenoid is 70 cm long and is composed of 300 turns of wire. Calculate flux linked with a circular surface if it has radius greater than 2 cm and axis of solenoid subtends an angle of `60^@` with the normal to the area (the centre of circular surface being on the axis of solenoid).

A

`6 xx 10^-6 Wb`

B

`5 xx 10^-5 Wb`

C

`6.76 xx 10^-7 Wb`

D

`7.6 xx 10^-7 Wb`.

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