Magnetic field due to currentHard
Question
A disc of radius r and positive charge q is rotating with angular speed ω in a uniform magnetic field B about a fixed axis as shown in figure, such that angle made by axis of disc with magnetic field is θ. Torque applied by axis of the disc is
Options
A.
, clockwise
, clockwiseB.
, anticlockwise
, anticlockwiseC., anticlockwise
, anticlockwiseD., clockwise
, clockwise
ω ⇒ τ = 
= More Magnetic field due to current Questions
When alternating current passes through a spring then it :-...In a region of space, a uniform magnetic field B exists in the y-direction. A proton is fired from the origin, with its ...For the hollow thin cylinderical current carrying pipe which statement is correct :-...A square of side L meters lies in the x-y plane in a region, where the magnetic field is given by where B0 is constant. ...A small block of mass m, having charge q is placed on frictionless inclined plane making an angle θ with the horizo...