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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  12. Who discovered that a current-carrying conductor would move when placed in a magnetic field?
  13. Hydrogen is an example of a _____ material.
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  28. An electron- volt (eV) is a unit of
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