Which of the following statements are true? Flux is the rate of change of a magn

Question

Which of the following statements are true?

Flux is the rate of change of a magnetic field.

If two wires are running in parallel, a current in the one wire induces an equal and opposite current in the other.

Magnetic flux through a coil results in an induced current.

The higher the flux through a coil, the higher the induced current.

A positive change in flux results in a positive EMF.

There is not going to be an induced current if the surface vector of the coil is perpendicular to the magnetic field, even if the field strength changes with time.

If the magnetic field varies with sin(omega*t) the EMF varies with -sin(omega*t).

If the downward flux through a coil is increasing, the induced current will be clockwise.

Explanation / Answer

True :If the magnetic field varies with sin(omega*t) the EMF varies with -sin(omega*t).

Magnetic flux (most often denoted as m), is the number of magnetic field lines (also called "magnetic flux density") passing through a closed surface (such as a conducting coil)

Change in Magnetic flux through a coil results in an induced current.

The higher theChnage in flux through a coil, the higher the induced current.

There is going to be an induced current if the surface vector of the coil is perpendicular to the magnetic field, even if the field strength changes with time.

If the downward flux through a coil is increasing, the induced current will be anticlockwise

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