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The magnetic flux φ (in weber) in a closed circuit of resistance 10Ω varies with time t (in second) according to equation φB = 6t2 - 5t + 1. The magnitude of induced current at t = 0.25sec is :
- a)1.2A
- b)0.2A
- c)0.8A
- d)0.6A
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The magnetic flux φ(inweber) in a closed circuit of resistance10&O...
The magnetic flux is a measure of the total magnetic field passing through a given surface area. It is defined as the dot product of the magnetic field and the surface area vector. Mathematically, the magnetic flux (Φ) can be calculated using the equation:
Φ = B * A * cosθ
where B is the magnetic field, A is the area vector, and θ is the angle between the magnetic field and the area vector.
The unit of magnetic flux is the Weber (Wb) in the International System of Units (SI).
Φ = B * A * cosθ
where B is the magnetic field, A is the area vector, and θ is the angle between the magnetic field and the area vector.
The unit of magnetic flux is the Weber (Wb) in the International System of Units (SI).
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The magnetic flux φ(inweber) in a closed circuit of resistance10&O...
According to faraday’s Law.
If the flux of magnetic field across the coil varies with time an emf is induced in it.
The induced emf is equal to negative rate of change of magnetic flux across it.
Magnitude of induced emf = 2V, magnitude of induced current i = 0.2 A
The correct answer is: 0.2A
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The magnetic flux φ(inweber) in a closed circuit of resistance10Ωvaries with timet(insecond) according to equation φB= 6t2 - 5t + 1. The magnitude of induced current att= 0.25sec is :a)1.2Ab)0.2Ac)0.8Ad)0.6ACorrect answer is option 'B'. Can you explain this answer?
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