Question

Write a hypothesis about the effect of the magnet polarity on the induced current. Use the "if . . . then . . . because . . ." format and be sure to answer the lesson question: "How does magnetic polarity affect the current flowing in a loop of wire?"

Answer 1

Explanation :

The induced current also depends on the polarity of the magnet. Mathematically, it is given as :

$E=-B\dfrac{d\phi}{dt}$

E is the induced emf, E = IR

B is the magnetic field

$\dfrac{d\phi}{dt}$ is the rate of change of magnetic flux.

$I=-\dfrac{B}{R}\dfrac{d\phi}{dt}$

I is the induced current.

The direction of electromagnetic force is determined by polarity of the magnet.

If the polarity of the magnet is reversed then the induced current will also reversed because the direction of electromagnetic force depends on the polarity of the magnet.

Answer 2

If the polarity of the magnet is reversed then the induced current will also be reversed. Because the direction of the electromagnetic force depends on the polarity of the magnet.

What is magnetic polarity?

A magnetic field is defined by poles called north and south. Magnetic polarity refers to the orientation of these poles in space. If both magnets have the same polarity the polarity is unipolar. But if the magnets have opposite polarity is said to be bipolar in nature.

The induced current also depends on the polarity of the magnet.

Mathematically it is given as

 $\rm{E=-B\frac{d\phi}{dt}}$

$\rm {IR=-B\frac{d\phi}{dt}}$

 $\rm{ I =-\frac{B}{R} \frac{d\phi}{dt}}$

E be the induced emf.

I will be the induced current.

B is the magnetic field.

The above relation clearly shows the relationship between electric current and magnetic field and its polarity. If the polarity of the magnet is reversed then the induced current will also be reversed. Because the direction of the electromagnetic force depends on the polarity of the magnet.

To learn more about the electromagnets refers to the link;

https://brainly.com/question/13803241