Name three elements required to specify the earth’s magnetic field at a given place.

Write about earth's magnetic field.

Write the value of earth's magnetic field.

Define the elelemts of the earth's magnetic field.

What are limits of earth's magnetic field?

Find the value of the vertical component and resultant intensity of the earth's magnetic field at a place where H is 0.2 G and angle of dip is 60°.

"The strength of the earth's magnetic field varies from place to place". Explain.

Name three elements with filled outermost shells.

A wheel with 25 metallic spokes each 0.4m long is rotated with a speed of 150 rev//min in a plane normal to the horizontal components of earth's magnetic field H_B at a place. If H_E=0.4G at the place, what is the induced emf between the axle and the rim of the wheel?

Where is the vertical component of earth's magnetic field zero?