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Faradays Laws Of Induction Free Doubts and Solutions
CBSE - XII Science - Physics - Electromagnetic Induction
explain this concept
Asked by panneer1766
24th April 2024,
1:52 PM
CBSE - XII Science - Physics - Electromagnetic Induction
A coil of N turns is placed in a magnetic field B such that B is perpendicular to the plane of the coil. B changes with time as B=B0 cos 2元 where T is time period. The magnitude of emf-induced in the coil will be maximum at
Asked by mishrigupta19319
5th April 2024,
12:01 PM
CBSE - XII Science - Physics - Electromagnetic Induction
a conductor 0.20m long is moved in a field of strength o.o5T with a speed of 0.30 ms‐¹. find , in volt ,e.m.f induced in it , if it is moved at right angles to both its length and the field.
Asked by simransimranpradhan28
21st October 2023,
11:06 PM
CBSE - XII Science - Physics - Electromagnetic Induction
Please refer to the uploaded image for the doubt
Asked by arjunsah797
23rd March 2022,
5:23 PM
CBSE - XII Science - Physics - Electromagnetic Induction
Please refer to the uploaded image for the doubt
Asked by arjunsah797
22nd March 2022,
7:03 PM
CBSE - XII Science - Physics - Electromagnetic Induction
Please refer to the uploaded image for the doubt
Asked by arjunsah797
21st March 2022,
7:26 PM
CBSE - XII Science - Physics - Electromagnetic Induction
A rod of iron and length 1 m fixed at one end is rotating with angular velocity 200 rad/s about the fixed end in a magnetic field of 0.2 T. Find the induced emf between the centre and far end of the road.
Asked by arjunsah797
20th March 2022,
11:16 AM
CBSE - XII Science - Physics - Electromagnetic Induction
How to minimize the eddy current
Asked by shadapmitshadap
18th January 2021,
7:17 AM
CBSE - XII Science - Physics - Electromagnetic Induction
explain Lenz's law considering a closed conducting coil and a bar magnet
Asked by milja9678623850
29th December 2018,
6:24 PM
CBSE - XII Science - Physics - Electromagnetic Induction
All
Asked by anuragharsh252000
21st December 2018,
4:54 PM
CBSE - XII Science - Physics - Electromagnetic Induction
IF THE MAGNET IN FARADAY'S EXPERIMENT IS REPLACED BY A CURRENT CARRYING COIL, WILL THE GALVANOMETER SHOW ANY DELFECTION? WHY?
Asked by afreensyed13
1st August 2018,
5:50 PM
CBSE - XII Science - Physics - Electromagnetic Induction
Curies law illustration
Asked by rraj.15266
1st November 2017,
8:24 PM
CBSE - XII Science - Physics - Electromagnetic Induction
State Lenz's Law. A metallic rod held horizontally along east-west direction, is allowed to fall under gravity. Will there be an emf induced at its ends? Justify your answer.
Asked by Topperlearning User
7th July 2015,
2:32 PM
CBSE - XII Science - Physics - Electromagnetic Induction
When the magnetic flux passing through a coil changes, will the induced emf and current be always produced in the coil ?
Asked by Topperlearning User
7th July 2015,
2:10 PM
CBSE - XII Science - Physics - Electromagnetic Induction
Show that Lenz’s law can be treated as a consequence of principle conservation of energy.
Asked by Topperlearning User
7th July 2015,
9:50 AM
CBSE - XII Science - Physics - Electromagnetic Induction
What is the significance of negative sign in the expression of emf
where the symbols have their usual meaning.
What is the significance of negative sign in the expression of emf
where the symbols have their usual meaning.
Asked by Topperlearning User
6th July 2015,
4:46 PM
CBSE - XII Science - Physics - Electromagnetic Induction
A uniform magnetic field B exists from the square frame of copper wire of area (A)10-2 m² in a direction perpendicular to its plane. The magnetic field changes with time at a steady rate of 0.08 T/s. find the current induced in the frame, if resistance(R) of the loop is given 2×10-3 Ω
Asked by Topperlearning User
6th July 2015,
4:46 PM
CBSE - XII Science - Physics - Electromagnetic Induction
In the closed circuit of resistance(r) 10 Ω, the magnetic flux Φ varies with time t according to the equation Φ = (6t² - 9t +3) milli weber. Calculate the magnitude of induced current at t = 0.5 second.
Asked by Topperlearning User
6th July 2015,
4:02 PM
CBSE - XII Science - Physics - Electromagnetic Induction
The magnetic flux linked with the circuit changes from 8×10-3 Wb to 4×10-3 Wb in 0.01 second. Calculate the emf induced in the circuit.
Asked by Topperlearning User
6th July 2015,
3:43 PM
CBSE - XII Science - Physics - Electromagnetic Induction
Does the change in the magnetic flux linked with the coil/circuit always induce current?
Asked by Topperlearning User
6th July 2015,
2:52 PM
CBSE - XII Science - Physics - Electromagnetic Induction
Find the emf induced in the coil of 200 turns and cross-section area 0.4 m², when a magnetic field perpendicular to the plane of the coil changes from 0.1 Wbm-2 to 0.5 Wbm-2, at a uniform rate over a period of 0.04 sec.
Asked by Topperlearning User
6th July 2015,
2:51 PM
CBSE - XII Science - Physics - Electromagnetic Induction
A coil of cross-sectional area 10² cm² is placed in the magnetic field, which changes to 8×10-2 wb/cm² with in 5 seconds. What will be the current across 5 Ω resistances?
Asked by Topperlearning User
6th July 2015,
2:45 PM
CBSE - XII Science - Physics - Electromagnetic Induction
Enlist the factors on which the induced emf depends?
Asked by Topperlearning User
6th July 2015,
2:38 PM
CBSE - XII Science - Physics - Electromagnetic Induction
State Lenz's law.
Asked by Topperlearning User
6th July 2015,
2:23 PM
CBSE - XII Science - Physics - Electromagnetic Induction
A coil made of copper wire of length l is kept stationary in the uniform magnetic field. How much is the emf induced in the coil?
Asked by Topperlearning User
6th July 2015,
2:06 PM
CBSE - XII Science - Physics - Electromagnetic Induction
How does the motion of magnet in Faraday's experiment affect the induced emf?
Asked by Topperlearning User
6th July 2015,
2:04 PM
CBSE - XII Science - Physics - Electromagnetic Induction
What is the basic cause of induced emf?
Asked by Topperlearning User
6th July 2015,
2:04 PM
CBSE - XII Science - Physics - Electromagnetic Induction
State Faraday's laws of electromagnetic induction.
Asked by Topperlearning User
6th July 2015,
2:02 PM
CBSE - XII Science - Physics - Electromagnetic Induction
Why did Faraday use a hollow paper cylinder as the core of the coil connected to a galvanometer while changing the magnetic flux linked with the coil by moving a bar magnet in its vicinity and not a ferromagnetic material like iron?
Asked by Chandropal Parashor
2nd August 2014,
7:18 PM
CBSE - XII Science - Physics - Electromagnetic Induction
A cylindrical bar magnet is kept along the axis of a circular coil and near it as shown in fig. will there be any induced emf at the terminals of the coil, when magnet is rotated (a) about its own axis and (b) about an axis perpendicular to the length of the magnet ?
Asked by Topperlearning User
4th June 2014,
1:23 PM
