A straight vertical wire carries a current of upward.

PHYSICS · Multi-part · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current

Problem

A straight vertical wire carries a current of

5\,\text{A}

upward. (i) At point

P

which is

5\,\text{cm}

due east of the wire, is the magnetic field directed into the page or out of the page? (ii) At point

Q

which is

5\,\text{cm}

due south of the wire, what is the direction of the magnetic field? Justify your answers and state whether the magnitudes at

P

and

Q

are equal or different.