Question

A vertical wire kept in Z-X plane carries a current from Q to P (see figure). The magnetic field due to current will have the direction at the origin O along

• A. $O X$
• B. $O X ^ { \prime }$
• C. $O Y$
• D. $O Y ^ { \prime }$

Answer 1

Answer: (D)

$O Y ^ { \prime }$

Answer 2

Use Right hand palm rule, or Maxwell’s Cork screw rule or any other.