Question 19: NCERT Solutions for 12th Class Physics: Chapter 5-Magnetism and Matter
A telephone cable at a place has four long straight horizontal wires carrying a current of 1.0 A in the same direction east to west. The earth’s magnetic field at the place is 0.39 G, and the angle of- dip is 35°. The magnetic declination is nearly zero. What are the resultant magnetic fields at point 4.0 cm below the cable?
Let us first decide the directions which can best represent the situation.
Telephone cable carry a total current of 4.0 A in direction east to west. We want resultant magnetic field 4.0 cm below.
Check the complete chapter with solutions.
NCERT Solutions for 12th Class Physics: Chapter 5-Magnetism and Matter