Magnetic Effects of Current and Magnetism

Following figures show the arrangement of bar magnets in different configurations

Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole moment m. Which configuration…

A moving coil galvanometer of resistance 100 Ω is converted to ammeter by a resistance

A moving coil galvanometer of resistance 100 Ω is converted to ammeter by a resistance of 0.1 Ω in the…

A bar magnet of pole strength 10 A-m is cut into two equal parts breadthwise.

A bar magnet of pole strength 10 A-m is cut into two equal parts breadthwise. The pole strength of each…

Which of the following particles will have minimum frequency of revolution

Which of the following particles will have minimum frequency of revolution when projected with the same velocity perpendicular to a…

A circular coil of radius 10cm and 100 turns carries a current 1 A.

A circular coil of radius 10cm and 100 turns carries a current 1 A. What is the magnetic moment of…

A bar magnet of moment of inertia I is vibrated in a magnetic field of induction

A bar magnet of moment of inertia I is vibrated in a magnetic field of induction 0.4x10⁻⁴ T. The time…

A super conductor exhibits perfect

A super conductor exhibits perfect Options (a) Ferrimagnetism (b) Ferromagnetism (c) Paramagentism (d) Diamagnetism Correct Answer: DiamagnetismExplanation:No explanation available. Be…

A circuit area 0.01 m² is kept inside a magnetic field which is normal to its plane.

A circuit area 0.01 m² is kept inside a magnetic field which is normal to its plane. The magnetic field…

A bar magnet of moment M and pole strength m is cut into parts of equal lengths.

A bar magnet of moment M and pole strength m is cut into parts of equal lengths. The magnetic moment…

At which place, Earth’s magnetism becomes horizontal

At which place, Earth's magnetism becomes horizontal Options (a) Magnetic pole (b) Geographical pole (c) Magnetic meridian (d) Magnetic equator…