Question

state the rule which helps to predict the direction the direction of magnetic field produce by current carrying loops of wire?

Answer 1

Its the right hand thumb rule.

If you point the thumb in the direction of current, then the direction​ in which the fingers curl, gives the direction of magnetic field.

Answer 2

 right hand thumb rule
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If you point the thumb in the direction of current, then the direction​ in which the fingers encircles the conductor, gives us the direction of the magnetic field.

by the help of this rule we can understand weather the magnetic field in inward or outward direction etc and this rules is mainly used to determine the direction of magnetic field