Advertisements
Advertisements
प्रश्न
In an oscillating LC circuit, the maximum charge on the capacitor is Q. The charge on the capacitor when the energy is stored equally between the electric and magnetic fields is
पर्याय
`"Q"/2`
`"Q"/sqrt3`
`"Q"/sqrt2`
Q
उत्तर
`"Q"/sqrt2`
APPEARS IN
संबंधित प्रश्न
The flux linked with a coil at any instant t is given by ΦB = − 10t2 - 50t + 250. The induced emf at t = 3 s is
The current i flowing in a coil varies with time as shown in the figure. The variation of induced emf with time would be
Mention the ways of producing induced emf.
How will you induce an emf by changing the area enclosed by the coil?
Show mathematically that the rotation of a coil in a magnetic field over one rotation induces an alternating emf of one cycle.
A rectangular coil of area 6 cm2 having 3500 turns is kept in a uniform magnetic field of 0.4 T. Initially, the plane of the coil is perpendicular to the field and is then rotated through an angle of 180°. If the resistance of the coil is 35 Ω, find the amount of charge flowing through the coil.
A fan of metal blades of length 0.4 m rotates normal to a magnetic field of 4 x 10-3 T. If the induced emf between the centre and edge of the blade is 0.02 V, determine the rate of rotation of the blade.
A bicycle wheel with metal spokes of 1 m long rotates in Earth’s magnetic field. The plane of the wheel is perpendicular to the horizontal component of Earth’s field of 4 x 10-5 T. If the emf induced across the spokes is 31.4 mV, calculate the rate of revolution of the wheel.
A graph between the magnitude of the magnetic flux linked with a closed-loop and time is given in the figure. Arrange the regions of the graph in ascending order of the magnitude of induced emf in the loop.
