If the solenoid is gripped by the right hand with the fingers pointing the direction of current flowa the outstretched thumb will then point the north pole. This is known as

A. Right hand rule

B. Helix rule

C. End rule

D. Cork screw rule

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  2. An alloy of 22 percent iron and 78 per cent nickel.
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  25. Magnetic effects of the earth as a huge magnet with north and south poles.
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