A coil is placed in a magnetic field such tha | vedclass

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(D) The magnetic flux $\phi$ through a coil is given by the formula $\phi = \vec{B} \cdot \vec{A} = BA \cos 	heta$,where $B$ is the magnetic field ma

Vedclass · Accepted Answer

$A, B, C$ and $D$

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(D) The magnetic flux $\phi$ through a coil is given by the formula $\phi = \vec{B} \cdot \vec{A} = BA \cos 	heta$,where $B$ is the magnetic field magnitude,$A$ is the area of the coil,and $	heta$ is the angle between the magnetic field vector and the area vector.$1$. By changing the magnitude of the magnetic field $(B)$,the flux $\phi$ changes. (Statement $A$ is correct).$2$. By changing the area of the coil $(A)$ within the magnetic field,the flux $\phi$ changes. (Statement $B$ is correct).$3$. By changing the angle $(	heta)$ between the direction of the magnetic field and the plane of the coil (which changes the angle between the magnetic field and the area vector),the flux $\phi$ changes. (Statement $C$ is correct).$4$. By reversing the magnetic field direction abruptly,the angle $	heta$ changes (e.g.,from $0^\circ$ to $180^\circ$),which changes the flux $\phi$. (Statement $D$ is correct).Therefore,all four methods can change the magnetic flux through the coil.

$A$ coil is placed in a magnetic field such that the plane of the coil is perpendicular to the direction of the magnetic field. The magnetic flux through a coil can be changed by:

Similar Questions

The unit of magnetic flux is

$A$ circular disc of radius $0.2 \; m$ is placed in a uniform magnetic field of induction $\frac{1}{\pi} \; Wb/m^2$ in such a way that its axis makes an angle of $60^{\circ}$ with $\vec{B}$. The magnetic flux linked with the disc is..... $Wb$.

Which of the following statements regarding magnetic lines of force is correct?

Assertion: The magnetic field lines are continuous and form closed loops.
Reason: Magnetic monopole does not exist.
The correct option among the following is

Assertion $(A)$: Magnetic flux is a vector quantity.
Reason $(R)$: Value of magnetic flux can be positive, negative, or zero.

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