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Q: How can it be shown that resistance alone does not determine the current to a motor armature? Why…
A: The armature of a motor is in every way similar to that of a generator. The conductors on the…
Q: What happens when current stops flowing through a solenoid?
A: Current stops in a solenoid
Q: A large power plant generates electricity at 12.0 kV. Its old transformer once converted the voltage…
A:
Q: Suggest two methods to reduce or dissipate the heat in the ferromagnetic core.
A: Heat dissipation is a type of heat transfer. Heat dissipation occurs when an object that is hotter…
Q: In HERTZ (rounded to 3 sig figs), approximately how frequently does this 1) device cycle through the…
A: Here we have given a differential equation of current.We have to study about the nature & other…
Q: How does one go about testing the magnetic dipole of a loop?
A: Testing the magnetic dipole moment of a loop can be done using various experimental methods. Here's…
Q: Explain the theory of electromagnetic induction in layman's terms. An illustration or example would…
A: Electrostatics is the study of static charges and the electric field generated by a static charge…
Q: Why does it become more difficult to move a magnet towards a coil when the number of turns in the…
A: When a magnet with similar pole is moved towards the coil with large number of turns, experiences a…
Q: Please explain why a moving conductor slows down near a magnet
A: To explain the moving conductor slows down near a magnet
Q: Magnetic induction at a distance 10 m from center of circular coil of area 1m² carrying 10 A is 2 x…
A: To find-Magnetic induction (B)=?Given-A=1 m2I=10 Ax=10 m
Q: why must the correct polarity be known when connecting equipment to a voltage source?
A: Most multimeters, including digital multimeters, can do this. Regarding alternating current in the…
Q: Magnetic susceptibility x equals * O dipole moment per unit volume O torque per unit area…
A: Magnetic susceptibility = M/H
Q: Name the material of core in (a) an electric bell (b) electromagnet (c) a dc motor (d) an ac…
A: The magnetic field is often created by wrapping a coil of wire around the core that carries a…
Q: If the north pole of magnet is moved towards the coil, the induced current in the coil will be…
A: According to Lenz’s law, the emf is induced in the coil to oppose the change.
Q: mmon household electric current is called alternating current because the current alternates…
A: Given: V(t)=163sinωt ω=60 cycles per sec
Q: Can induction be used to produce charge on an insulator?
A: The insulator is the material that has no free electrons. When a charged object is brought to the…
Q: A transformer with more primary turns than secondary turns will produce a secondary voltage higher…
A:
Q: A coil of wire is connected to a voltmeter. A bar magnet is quickly inserted into the coil of wire…
A: An emf induces in the coil if it is placed in the changing magnetic field or if it is moving then…
Q: #Consider the system as shown in Fig. 2. The pulley is massless and the whole system is…
A:
Q: In electromagnetic induction, explain the principle why the voltmeter behave the way we observe it?
A: The voltmeter has a large resistance. So, the low current flows in the circuit because the…
Q: 20. FIGURE below shows a zero-resistance rod sliding to the right on two zero-resistance rails…
A: We know that emf induced will be Emf= Blv Current induced will be I= emf/ R
Q: Small one-cylinder gasoline engines sometimes use a device called a magneto to supply current to the…
A: A permanent magnet is attached to the flywheel. A stationary coil is mounted adjacent to the magnet.…
Q: #2. (a) Explain every step briefly the dissimilarities between Biot-Savart law for the calculation…
A: The electric field on a charged particle in accordance with Coulomb's law is E=14πεoqr2 The magnetic…
Q: Name the transformer used in the (a) power generating station (b) power sub station. State the…
A: (a).The transformer used in the power generating station is step-up transformer of high voltage…
Q: On the freeway, there are also induction loops to detect cars’ speed. Concidering when you move a…
A: In the coil, the voltage is induced due to the relative motion between the coil and the magnet.
Q: Which of the following is not an application of electromagnetic induction? Select the correct answer…
A: Electromagnetic induction of an electromotive force produced by the motion of a conductor across a…
Q: In an electric trolley or bus system, the vehicle’s motor draws current from an overhead wire by…
A: Given: Single isolated circuit, When a current passes the present of the circuit ,there sets up the…
Q: Are you convinced that motors and generators are really the same? Explain how they are the same yet…
A: The design/construction of motor and generator are quite similar. Both have coils(windings)…
Q: A system displaying a hysteresis loop such as a ferromagnet, is a device for storing memory?’…
A: It is said that a system displaying a hysteresis loop such as ferrimagnets’ is a device for storing…
Q: Why small energy losses do occur in transformers?
A:
Q: A brushless DC motor does not have a commutator. Explain why.
A: A brushless DC motor or BDLC is a type of motor that does not have a commutator.
Q: The solenoid, shown below, carries positive current from left to right. The current is suddenly…
A: The initial direction of current is towards the right, thus the electrons are present at the left…
Draw the hysteresis cycle and explain its occurrence in alternating current.
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