Right hand grip rule

Right hand grip rule

:"For the related yet different principle relating to electromagnetic coils, see right-hand rule".The right hand grip rule is a physics principle applied to electric current passing through a solenoid, resulting in a magnetic field. When you wrap your right hand around the solenoid with your fingers in the direction of the conventional current, your thumb points in the direction of the magnetic north pole. It can also be applied to electricity passing through a straight wire: here, the thumb points in the direction of the conventional current (from positive to negative), and the fingers point in the direction of the magnetic field from north to south.

The principle is also used to determine the direction of the torque vector. If you grip the imaginary axis of rotation of the rotational force so that your fingers point in the direction of the force, then the extended thumb points in the direction of the torque vector.

See also

*Right hand rule, a related yet different principle
*Ampère's circuital law

References

* [http://www.gcse.com/energy/motor_effect.htm GCSE Physics]
* [http://sciencecity.oupchina.com.hk/npaw/student/glossary/right_hand_grip_rule.htm Oxford University Press (China)]


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