CHAPTER 10 magnetic field due to electric current class 12 SOLUTIONS MAHARASHTRA BOARD
Q12. A circular coil of wire is made up of 100 turns, each of radius 8.0 cm. If a current of 0.40 A passes through it, what be the magnetic field at the centre of the coil? DONE
Q3. Calculate the value of magnetic field at a distance of 2 cm from a very long straight wire carrying a current of 5 A
Q9.Magnetic field at a distance 2.4 cm from a long straight wire is 16 µT. What must be current through the wire?
Q11. A circular loop of radius 9.7 cm carries a current 2.3
A. Obtain the magnitude of the magnetic field (a) at the centre of the loop and
(b) at a distance of 9.7 cm from the centre of the loon but on the axis. DONE
Q8. Current of equal magnitude flows through two long parallel wires having separation of 1.35 cm. If the force per unit length on each of the wires in 4.76 x 10-2 N, what must be I ? DONE
Q7.A very long straight wire carries a current 5.2 A. What is the magnitude of the magnetic field at a distance 3.1 cm from the wire? DONE
Q2.A piece of straight wire has mass 20 g and length 1 m. It is to be levitated using a current of 1 A flowing through it and a perpendicular magnetic field B in a horizontal direction. What must be the magnetic of B?
DONE