Generate Quiz 6997FF4D482F5

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.

Initial current = I1=5 I2 = 0 is the final current. A duration of 0.1 seconds

200V is the average emf.
Use the following formula to calculate self-inductance: =LIt L=I/t=2005/0.1=4. Henry

Where field lines are close together, there is a strong magnetic field.

Faraday’s law states that an electromotive force is induced in a circuit proportional to the rate at which the magnetic flux connecting it changes. Therefore, emf is the result of rotating a coil in a uniform magnetic field around an axis that passes through the center and perpendicular to the field’s direction.

emf= -dՓ/dt ՓB =B.Acos𝝷

=-d(B.Acos𝝷)/dt

=-BA d/dt cos𝝷

= -BA = sin d𝝷/dt

= emf = BAsin d𝝷/dt

Therefore, when sin𝝷 ↑, emf↑

Sin𝝷 = max when𝝷 =𝞹 /2

The angle between the coil’s plane and the magnetic field is zero when cosθ is maximum or θ is zero, or  B⟂A  when plane ∥ B, that is, when the angle between the area vector and the magnetic field is π/2.

Magnetic fields are created surrounding two parallel straight conductors that are carrying current in the same direction. The conductors experience an attractive force as a result of the interaction between these magnetic fields.

The magnetic field lines surrounding each conductor are in the same direction when the currents are flowing in the same direction, as per the right-hand rule for wires. Consequently, one conductor’s magnetic field lines will cross over and interact with the other conductor’s magnetic field lines. The conductors are drawn to one another by the net force created by this interaction.

The magnetic force between the two parallel straight conductors carrying current in the same direction is therefore the reason for their attraction. Option A) accurately recognizes [

This can be accomplished by making sure the coils have a large number of turns and are positioned close to one another. To guarantee that the magnetic fields produced by the currents passing through the coils add up to a stronger overall field, the coils should also be wound in opposite directions. Engineers can minimize leakage flux losses and achieve effective power transfer by optimizing the winding configuration.

Option D is the best option as a result.

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

e/m = v/Br