State Biot-Savart law.

(i) State Biot-Savart.s law. (ii) Find magnetic flux density at a point on the axis of a long solenoid having 5000 turns m when it carrying a current of 2 A.

Answer the following: (a) State Biot - Savart's law and express this law in the vector form. (b) Two identical circular coils, P and Q each of radius R , carrying currents 1A and sqrt(3)A respectively, are placed concentrically and perpendicular to each other lying in the XY and YZ planes. Find the magnitude and direction of the net magnetic field at the centre of the coils.

Write Biot-Savart law. Write the path of motion of an electron when it enters in magnetic field at (a) perpendicular (b) an angle theta .

State the Biot-Savart law which gives the magnetic field B at a distance r from a current element. Hence obtain an expression for the magnetic field B_(Q) due to a point charge Q moving with constant velocity v (assumed non-relativistic). Point charge Q and Q' are constrained to move along the x-and y-axes, respectively, with the same uniform speed v. AT time t = 0 both charges are at the origin. At time t calculate the Lorentz force F on Q' due to the magnetic field of Q

Which of the following gives the value of magnetic field according to, Biot-Savart’s law

Which of the following given the value of magnetic field due to small current elememt accordong to Biot -Savart's law

A: Ampere circuital law is not independent of the Biot- Savart's law. R: Ampere's Circuital law can be derived from the Blot Savart law.

(A) : When the observation point lies along the length of the current element, magnetic field is zero. (R) : According to Biot-Savart's law field is defined only when position vector of a point relative to current element is non zero.

The vector form of Biost-Savart law for a current carrying element is

Using Biot-Savart’s law, derive an expression for magnetic field at any point on axial line of a current carrying circular loop. Hence, find magnitude of magnetic field intensity at the centre of circular coil.