If the strength of the magnetic field is increased by `21%` the frequency of a magnetic needle oscillating in the field.

The strength of the earth's magnetic field is

The strength of the earth's magnetic field is

The strength of the earth's magnetic field is

The strength of the Earth's magnetic field is

The strength of a magnetic field increases as _________

How are magnetic field lines related to the strength of a magnetic field?

The strength of the magnetic field in which the magnet of a vibration magnetometer is oscillating is increased 4 times its original value. The frequency of oscillation would then become