Magnetic Flux Quiz

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Flux basics and formulas

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NOR FARIDAH HANIM MAT JUNIT

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Magnetic Flux Quiz


Magnetic Flux QuizVersión en línea Flux basics and formulas por NOR FARIDAH HANIM MAT JUNIT 1 What does magnetic flux quantify in a given surface? a The strength of the magnetic field at a point b The magnetic moment of a material c The energy density of the magnetic field d The number of magnetic field lines passing through the surface 2 Which units are used for magnetic flux? a Henry (H) b Volt (V) c Weber (Wb) d Tesla (T) 3 What is the formula for flux through a flat surface perpendicular to B? a Φ = B×V b Φ = B/A c Φ = B·A d Φ = A/B 4 How does flux change if the surface is tilted by an angle θ to B? a Φ = B/ (A·cosθ) b Φ = B·A·sinθ c Φ = B·A/cosθ d Φ = B·A·cosθ 5 If B is uniform and parallel to the surface, what is Φ? a Φ = A b Φ = B c Φ = 0 d Φ = √(B·A) 6 What happens to Φ if the area is doubled with B and orientation constant? a Φ stays same b Φ increases by four times c Φ halves d Φ doubles 7 Which law relates changing flux to induced emf? a Faraday's law b Ohm's law c Gauss's law d Coulomb's law 8 Which situation yields the maximum magnetic flux through a given area? a B tangential to edge only b B perpendicular to the surface with maximum B c B parallel to the surface d B zero 9 In a loop, what effect does increasing the loop area have on Φ, assuming B and orientation fixed? a Φ increases with area squared b Φ becomes independent of area c Φ increases proportionally with area d Φ decreases 10 What is the flux through a loop if B = 0? a Φ = 0 b Φ = A c Φ = B d Φ = √(B)·A Feedback 1 Flux measures how much B goes through an area, not field strength at a point or energy. The moment is different. 2 Weber is the unit; Tesla is for B, Henry for inductance, Volt for electric potential. 3 For perpendicular orientation, flux is B times area; others are incorrect. 4 Flux reduces by cosθ when the surface is tilted relative to B. 5 If B is parallel to the surface, the perpendicular component is zero, so flux is zero. 6 Flux is proportional to area when B and angle are constant. 7 Faraday's law links dΦ/dt to induced emf. 8 Maximum flux occurs when B is normal and as large as possible. 9 Flux is proportional to area for fixed B and orientation. 10 If there is no magnetic field, there are no passing lines, so flux is zero.

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Magnetic Flux Quiz

Test

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Creada por

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Magnetic Flux QuizVersión en línea

por NOR FARIDAH HANIM MAT JUNIT

What does magnetic flux quantify in a given surface?

Which units are used for magnetic flux?

What is the formula for flux through a flat surface perpendicular to B?

How does flux change if the surface is tilted by an angle θ to B?

If B is uniform and parallel to the surface, what is Φ?

What happens to Φ if the area is doubled with B and orientation constant?

Which law relates changing flux to induced emf?

Which situation yields the maximum magnetic flux through a given area?

In a loop, what effect does increasing the loop area have on Φ, assuming B and orientation fixed?

What is the flux through a loop if B = 0?

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