Question

A powerline carries an electric current to the north. Immediately above the powerline, the magnetic field produced by the current points ________ , a. down b. up c. toward the west d. toward the east e. toward the north f. toward the south while below the powerline the field points ._______ a. toward east b. toward south c. toward west d. down e. up f. toward north

Answer 1

Direction of magnetic field for current carrying straight wire is given by right hand thumb rule or bio savart law. We put right hand thumb in direction of current than perpendicular direction to our Palm is direction magnetic field