Asolenoid of radius r 5 1.25 cm and length , 5 30.0 cm has 300 turns and carries 12.0 a. (a) calculate the flux through the surface of a disk-shaped area of radius r 5 5.00 cm that is positioned perpendicular to and centered on the axis of the solenoid as

Explanation:

Magnetic field due to a long solenoid at the center is given by

here we know that

N = 300

L = 30 cm

i = 12 A

now magnetic field is given as

Now magnetic flux through the disc is given as

when cloud cover increases then the suns ray's which provides the earth with light and warmth gets covered due to the due to the suns ray's being blocked, the temperature in that region

therefore to conclude i would like to say that,

=more the cloud cover, the lesser the

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.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue