Which of the following statements correctly relates the direction of electric current…
PHYSICS · Single correct · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current
Problem
Which of the following statements correctly relates the direction of electric current in a straight conductor to the direction of the magnetic field produced around it?
(a) If the thumb of the left hand points along the current, the curled fingers indicate the direction of the magnetic field lines.
(b) If the index finger of the right hand points along the current, the middle finger shows the direction of the magnetic field lines.
(c) If the thumb of the right hand points along the current, the curled fingers indicate the direction of the magnetic field lines.
(d) If the current flows vertically downwards, the magnetic field lines are straight lines parallel to the conductor.