When a current flows through an inductor, its mass   Select one:

Q: What do you end up with if you cut a magnet in half? A. one north-pole piece and one south-pole…

A: We cut a magnet in two pieces

Q: 4. Three copper frames are dragged through an external magnetic field in the direction s shown. The…

A: Lenz's law staes that the induced electromotive force with different polarities induces a current…

Q: 3. A wire is moving on frictionless rails in a uniform magnetic field, as shown to the right. The…

A: We have a wire of length L=5 cm=0.05 m which is moving along a rail experiencing a magnetic field of…

Q: Which of the following statements are FALSE? Tick the box to the left of any that you consider…

A:

Q: Answer the Multiple Choice Questions: 1- The mass of an object: A. is slightly different at…

A:

Q: Q1. The magnetic flux density B is constant. The shorting bar moves to the right with a velocity vy,…

A: We will use the induced emf formula,

Q: What would change when the orientation of the magnet is reversed?  I. Direction of the induced…

A:

Q: 4. A metal bar of mass 4m slides frictionlessly on two parallel conducting rails a distance 21…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: A coil has 20 turns each with an area of 1.5 x 10-3 m2. A magnetic field is perpendicular to the…

A:

Q: 1. In a charging capacitor, which of the following phenomenon is considered in Ampere's law a.…

A: 1. In a charging capacitor, displacement current is considered in Ampere's law. So option (d) is…

Q: 4. Two parallel wires carry the same current and are at a distance r from each other. a. They repel…

A:

Q: The magnetic field inside a superconducting solenoid is 4.50 T. The solenoid has an inner diameter…

A: Given data The magnetic field is B=4.50 T The diameter is d=6.2 cm The length of solenoid is L=26.0…

Q: A proton moving with a speed of 3.20 × 10 5 m/s perpendicular to a uniform magnetic field of 0.0786…

A: Proton in a magnetic field with velocity perpendicular to magnetic field direction follows circular…

Q: Two identical coils of wire are connected to different power supplies. The current in coil A is 0.50…

A: At the same distances, the magnetic fields due to their current-carrying coils are calculated. Write…

Q: How many turns of a coil are necessary to produce a 0.25-T magnetic field inside a 50-cm-long…

A: Given data:  Magnetic field (B) = 0.25 T Length (L) = 50 cm = 0.50 m Current (I) = 20 A Required:…

Q: When a magnet is passed through a conducting wire coil, the changing magnetic flux will induce

A: Answer  A    an electromagnetic force in the coil.

Q: Andrea is working in a Biochemistry lab at UCI, when she discovers that the "athletes" at UCI all…

A:

Q: 3. If a South pole moves toward the loop from above the page, in what direction is the induced…

A: For the direction of induced current in a circuit or coil due to a change in the magnetic field, we…

Voltage Across Inductor

An actor is a passive electrical component that consists of a coil bent in the form of wire which uses electromagnetism to produce electric current through the coil. When the electric current flows through a conductor that is the coil, a magnetic flux is developed around the conductor. This flow of current through the coil creates a magnetic field based on Fleming's Right-hand thumb rule. If there is any decrease in the current passing through the inductor, then the magnetic field will also decrease and energy is released through the generation of electric current. There is also a secondary voltage inducing in the same coil due to the magnetic flux, since it opposes any changes in the electric current flowing through the circuit. An inductor is also called choke, coil, or solenoid. A choke is designed to block certain frequencies when the DC current passes. A winding coil is coated with insulation to give extra insulation and protect the circuit. They are usually tightly wrapped around a central core which is cylindrical in nature so that the magnetic flux can be induced. The solenoid is a three-dimension coil that is used to exhibit electromagnetism when the magnetic field is developed due to the current flowing through the coil. The sign convention of the inductor is the same as the power dissipating device. When the current flows into the positive side of the voltage across the inductor, the value is positive and the inductor dissipates power whereas when the inductor releases the power back to the circuit, the current has a negative sign convention.