1.

Concentric circles with arrows centred at the wire AB are shown in figure.(a) no current in AB(b) current flows from B to A(c) current flows from A to B(d) none of the above​

Answer»

To find the direction of current :-

In straight current carrying wire:-

Use RIGHT hand RULE. It STATES that when you CURL your fingers of your right hand along the arrows of concentric lines then the thumb gives the direction of the current in the straight wire.

Like in the question you mentioned above if you curl your fingers clockwise like of the concentric lines arrow your thumb will point downward i.e. in the direction of A to B.


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