Magnetic Effects Of Current Mock Tests

When a bar magnet is freely suspended, it aligns in which direction?

A charged particle moves parallel to a uniform magnetic field. The force experienced by the particle is:

A long straight wire carries a current of 5 A. The magnetic field at a distance of 0.1 m from the wire is: (μ₀ = 4π × 10⁻⁷ T m/A)

An electromagnet is made by:

A proton and an electron enter a uniform magnetic field perpendicular to their velocities with the same speed. The ratio of radii of their paths r_p/r_e is:

A bar magnet of magnetic moment M is cut into two equal halves parallel to its axis. The magnetic moment of each half is:

In a domestic electric circuit, the colour of the earth wire as per Indian standard is:

A current-carrying straight conductor is placed in a magnetic field. The direction of the force on the conductor will be maximum when the angle between the direction of current and the direction of magnetic field is: