Generate Quiz 6997FF7E685E1

A coil or loop that carries current functions similarly to an electromagnet. The clock face rule can be used to understand this magnet’s polarity. That face of the loop displays the North Pole if the current is flowing counter-clockwise. In contrast, that face of the loop displays the South Pole if the current is flowing clockwise.

Fc = Fm mv^2/r = Bev Simplifying and rearranging, we get

e/m = v/Br

B.A. = magnetic flux

The dot product of the magnetic field and the area perpendicular to the field is known as magnetic flux.

For magnetic flux, options B, C, and D are inappropriate.

The time rate at which the magnetic flux changes in a circuit is directly proportional to the induced emf. Additionally, the induced emf is zero if the flux remains constant.

The following formula can be used to determine how long it takes a particle to make one revolution in a circular path of radius r:

T = 2πr/v

where v is the particle’s velocity. F = qvB is the formula for the force acting on a charged particle q moving at velocity v in a magnetic field of strength B. The centripetal force mv²/r is provided by the force, so we have:

qvB = mv²/r

After calculating v, we obtain:

v = (qBr/m)

When we replace T in the formula with this value of v, we obtain:

T = 2πr/v = 2πm/qB

As a result, the particle needs 2πm/qB to complete one revolution. Answer A is right.

q x v x B x sin(θ) ; where sin 45 is equal to 1/✓2

Putting the values together yields 4eB/✓2, or 2✓2 eB.( 4/✓2 = 2✓2).

The magnetic field lines inside a solenoid are parallel and extremely near to one another. As a result, a solenoid’s internal magnetic field is maximum and uniform.