Recent questions tagged magnetic flux

+2 votes

1 answer

Starting from the expression for the energy W = (1/2)LI^2, stored in a solenoid of self-inductance L to build up the current

asked Apr 4, 2019 in Class 12 by kratos

+3 votes

1 answer

Is there an induced emf (motional emf) in a conductor if it moves in a plane parallel to a magnetic field?

asked Mar 20, 2019 in Class 12 by kratos

+2 votes

1 answer

A metallic rod of length 'L' is rotated with angular frequency of 'ω' with one end hinged at the centre

asked Mar 10, 2019 in Class 12 by kratos

+1 vote

1 answer

A magnet is made to oscillate with a particular frequency, passing through a coil as shown in figure.

asked Mar 5, 2019 in Class 12 by kratos

+2 votes

1 answer

A rectangular conductor LMNO is placed in a uniform magnetic field of 0.5T.

asked Feb 26, 2019 in JEE by kratos

+3 votes

1 answer

A nonplanar loop of a conducting wire carrying a current I is placed as shown in the figure.

asked Feb 25, 2019 in JEE by kratos

+1 vote

1 answer

Predict the polarity of the capacitor in the situation described by adjoining figure. Explain the reason too.

asked Feb 18, 2019 in Class 12 by kratos

+2 votes

1 answer

The magnetic field through a single loop of wire, 12 cm in radius and 8.5 Ω resistance, changes with time as

asked Feb 18, 2019 in Class 12 by kratos

+3 votes

1 answer

Consider a metal ring kept (supported by a cardboard) on top of a fixed solenoid carrying a current I (see Fig 6.5).

asked Feb 8, 2019 in JEE by kratos

+1 vote

1 answer

Figure shows a rectangular loop conducting PQRS in which the arm PQ is free to move.

asked Feb 8, 2019 in Class 12 by kratos

+2 votes

1 answer

Mention the expression for the self – inductance.

asked Jan 30, 2019 in Class 12 by kratos

+1 vote

1 answer

The reading of ammeter in the circuit shown will be (a) 24 A (b) 2.4 A

asked Jan 21, 2019 in Class 12 by kratos

+3 votes

1 answer

polarity of induced emf

asked Jan 21, 2019 in Chemistry by kratos

+1 vote

1 answer

The wire in Figure below is being moved downwards through the magnetic field so as to produce induced current.

asked Jan 10, 2019 in Class 12 by kratos

+1 vote

1 answer

Predict the direction of induced current in a metal ring when the ring is moved towards a straight conductor with constant speed v.

asked Jan 7, 2019 in Class 12 by kratos

+1 vote

1 answer

Angular velocity of the rod about centre of mass of the system is :

asked Dec 23, 2018 in JEE by kratos

+3 votes

1 answer

Define the Lenz'* law.

asked Dec 19, 2018 in Class 12 by kratos

+1 vote

1 answer

A tailor gets a profit of Rs. 100 from a shirt and Rs. 170 from a pant. In a week of 56 hours, he uses 20 hours for stitching

asked Dec 18, 2018 in Class 12 by kratos

+1 vote

1 answer

A solid metallic sphere of radius r is allowed to fall freely through air. If the frictional resistance

asked Dec 6, 2018 in JEE by kratos

+1 vote

1 answer

A 1.0 m long metallic rod is rotated with an angular frequency of 400 rad *^−1

asked Dec 3, 2018 in Class 12 by kratos

To see more, click for the full list of questions or popular tags.

...