Advertisements
Advertisements
प्रश्न
A metallic loop is placed in a nonuniform magnetic field. Will an emf be induced in the loop?
Advertisements
उत्तर
According to Faraday's Law, an emf is induced in a loop when the magnetic flux through the loop changes. If the magnetic field is nonuniform, the flux through the loop changes as the position of the loop changes relative to the magnetic field or if the strength of the magnetic field varies over time. This change in flux induces an emf in the loop. Therefore, in a nonuniform magnetic field, there will be a change in magnetic flux through the loop, leading to the induction of an emf.
APPEARS IN
संबंधित प्रश्न
How does the mutual inductance of a pair of coils change when
(i) distance between the coils is increased and
(ii) number of turns in the coils is increased?
An inductor is connected to a battery through a switch. Explain why the emf induced in the inductor is much larger when the switch is opened as compared to the emf induced when the switch is closed.
Find magnetic flux density at a point on the axis of a long solenoid having 5000 tums/m when it carrying a current of 2 A.
Answer the following question.
When a conducting loop of resistance 10 Ω and area 10 cm2 is removed from an external magnetic field acting normally, the variation of induced current-I in the loop with time t is as shown in the figure.
Find the
(a) total charge passed through the loop.
(b) change in magnetic flux through the loop
(c) magnitude of the field applied
The magnetic flux linked with a coil of N turns of area of cross-section A held with its plane parallel to the field B is ______.
The magnetic flux linked with a coil in Wb is given by the equation Φ = 3t2 + 4t + 9. Then the magnitude of induced emf at t = 2 sec will be ______.
The dimensions of magnetic flux are ______
The unit of magnetic flux in SI is ______
A square of side L meters lies in the x-y plane in a region, where the magnetic field is given by `B = Bo(2hati + 3hatj + 4hatk)`T, where B0 is constant. The magnitude of flux passing through the square is ______.
A circular coil has radius ‘r', number of turns ‘N’ and carries a current ‘I’. Magnetic flux density ‘B’ at its centre is ______.
Which symbol represents magnetic flux?
What does \[\vec B\] represent in the magnetic flux formula?
What does \[\vec A\] represent in the magnetic flux formula?
What is \[\theta\] in \[\Phi_B=BA\cos\theta\]?
How is a surface handled when calculating flux through a non-uniform magnetic field or a curved surface?
What condition is specified for using \[\Phi=NBA\cos\theta\] as the magnetic flux linkage of a coil?
Which equivalent unit of magnetic flux uses tesla and square metres?
What is the flux when the magnetic field is at an angle \[\theta\] to the area vector?
What is associated with electromagnetic induction?
Why does the number of magnetic field lines entering a closed surface equal the number leaving it?
