List of top Physics Questions on Biot-Savart Law asked in CUET (UG)

Assertion-Reason Type Question Assertion (A): The magnetic field at the center of a circular current carrying loop is directly proportional to the current flowing through it.
Reason (R): According to Biot–Savart’s law, magnetic field produced by a current element is proportional to the current element. Choose the correct answer from the options given below:

The nucleus of helium atom contains two protons that are separated by a distance 3.0 $\times$ 10⁻¹⁵ m. The magnitude of the electrostatic force that each proton exerts on the other is

The magnetic induction at the centre $O$ in the figure shown is

A long wire with a small current element of length 1 cm is placed at the origin and carries a current of 10 A along the x-axis. The magnitude of the magnetic field, due to the element, on the y-axis at a distance 0.5 m from it, would be

What is the magnetic induction of the field at the point O in a current I carrying wire that has the shape as shown in the figure? The radius of the curved part of the wire is R, the linear parts are assumed to be very long.