NCERT Solution Class 1O Science Chapter 12 Magnetic Effects of Electric Current
NCERT Solution Class 1O Science Chapter 12 Magnetic Effects of Electric Current - Page number 196 1. Why does a compass needle get deflected when brought near a bar magnet? Solution : A compass needle is a small bar magnet when it is brought near a bar magnet its magnetic field lines interact with that of the bar magnet. Hence , a compass needle shows a deflection when brought near the bar magnet Example 12.1 A current through a horizontal power line flows in east to west direction. What is the direction of magnetic field at a point directly below it and at a point directly above it? Solution The current is in the east-west direction. Applying the right-hand thumb rule, we get that the magnetic field (at any point below or above the wire) turns clockwise in a plane perpendicular to the wire, when viewed from the east end, and anti-clockwise, when viewed from the west end. Page number 200 1. Draw magnetic field lines around a bar magnet. Solution : Magnetic field line...