2023 Exam Questions
Q. What is the value of force on a closed circuit in a magnetic field?
Q. Obtain an expression for magnetic induction of a toroid of ‘N’ turns about an axis passing through its centre and perpendicular to its plane.
Q. Calculate the current flowing through two long parallel wires carrying equal currents and separated by a distance of 1.35 cm experiencing a force per unit length of 4.76 x 10-2 N/m.
2022 Exam Questions
Q. The unit Wbm-2 is equal to _____.
(A) henry
(B) watt
(C) dyne
(D) tesla
Q. The magnitude of the megnetic field at the centre of a circular current carrying coil varies ____.
(A) inversely with the square of the radius of the coil
(B) directly with the radius of the coil
(C) inversely with the radius of the coil
(D) directly with the square of the radius of the coil
Q. Draw a neat and labelled diagram of suspended coil type moving coil galvanometer.
Q. Calculate the value of magnetic field at a distance of 3 cm from a very long, straight wire carrying a current of 6 A.
Q. A current of equal magnitude flows through two long parallel wires separated by 2 cm. If force per unit length of 4 x 10-2 N/m acts on both the wires respectively, calculate the current through each wire.
