Which of the following is known as 'baking soda'?

A long cylindrical wire carries a positive charge of linear density l. An electron (- e,m) revolves around it in a circular path under the influence of the attractive electrostatic force.The speed of electron is

In which of the following devices the magnetic effect of electric current is not used?

What happens when a compass is taken near a current-carrying conductor?

The value of magnetic field due to a small element of current carrying conductor at a distance r and lying on the plane perpendicular to the element of the conductor is?

The value of the intensity of the magnetic field at a point due to a current-carrying conductor depends on the?&nbsp;

Which of the following is known as 'baking soda'?

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