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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A uniform constant magnetic field B is directed at an angle of 45 to the x-axis in the xy- plane . PQRS is a rigid, square wire frame carrying a steady current I0, with its centre at the origin O. At time t=0, the frame is at rest in the position as shown in figure , with its sides parallel to the xandy axis. Each side of the frame is of mass M and length L. (a) What is the torque τ about O acting on the frame due to the magnetic field? (b) Find the angle by which the frame rotates under the action of this torque in a short interval of time

A uniform constant magnetic field B is directed at an angle of 45 to the x-axis in the xy- plane . PQRS is a rigid, square wire frame carrying a steady current I0, with its centre at the origin O. At time t=0, the frame is at rest in the position as shown in figure , with its sides parallel to the xandy axis. Each side of the frame is of mass M and length L. (a) What is the torque τ about O acting on the frame due to the magnetic field? (b) Find the angle by which the frame rotates under the action of this torque in a short interval of time

A uniform constant magnetic field B is directed at an angle of 45 to the x-axis in the xy- plane . PQRS is a rigid An electron gun G emits electrons of energy 2keV travelling in the positive x-direction. The electrons are required to hit the spot S where GS = 0.1m and the line GS makes an angle of 60 with the x-axis as shown in figure. A uniform magnetic field B parallel to GS exists in the region outside the electron gun. square wire frame carrying a steady current I0 the frame is at rest in the position as shown in figure with its centre at the origin O. At time t=0