Question

what will happen to current if strength of magnet is double in given a activity​

Answer 1

Answer:

The magnetic force on current I carrying wire of length L in the magnetic field

B

is

F

=BIL

Thus, force is proportional to current.

So when current I is doubled, the force will be doubled.

Answer 2

If strength of magnet is double in given a activity​, the current also doubles.

• Magnetic field due to a current-carrying conductor is given by the formula,

        $dB = \frac{\mu_{o} }{4\pi } \frac{I * dl * \sin \theta}{r^{2} }$

• Here, dB is the magnetic field at a point, I is the current and dl is the length of the element taken into consideration, θ is the angle between the length of the element and the line joining the element to the point and r is the distance between the element and the point.

• This relation is also known as Biot-Savart Law.
• Increase in the strength of the magnet means increase in the magnetic field.
• As evident from the relation, magnetic field of the conductor is directly proportional to the current flowing through it.

       $dB\alpha I$

• So, if the magnetic field doubles, the current does too.