A brushed DC motor has a commutator. Explain its function

Q: A magnet is suspended next to a solenoid and is free to rotate. When current flows in the solenoid…

A: The given problem can be solved by using Lenz's law, according to Lenz's law the direction of the…

Q: (L11) The current flowing through a 3.64E-3 H inductor increases from 3.50 A to 9.62 A. What is the…

A: Inductance of inductor, L=3.64E-3 HInitial value of current, i0= 3.50 AFinal value of current,…

Q: A conducting spherical shell is placed on one end of a long solenoid. If the current is doubled,…

A: Flux linked through surface is product of magnetic field & area.  Magnetic field of solenoid…

Q: True or False: The left hand rule can be used to determine the direction of rotation of an electric…

A: When a current-carrying conductor is placed under a magnetic field(B) , a force(F)  or thrust acts…

Q: You need to redesign an existing inductor so that it will store four times as much energy in the…

A: The magnetic energy stored in an inductor is given by the equation U=12LI2L is the inductanceI is…

Q: A 3.7 mH inductor is initially connected to a 4.6 V battery at t 0 through a 3.0 Q resistor. Once…

A: Given that, The inductance of an inductor (L) = 3.7 (mH) Supply voltage (ε) = 4.6 (V)Resistance (R)…

Q: Generator and Transformer - Applications of Electromagnetic Induction Electricity Generator Induced…

A: Given, The magnetic field, B=1.29T Number of turns, N=200 The radius of the coil, r=0.06m a. The…

Q: Why does a brushed DC motor have a commuter and what is its function?

A:

Q: #71. At fixed length h of the coil, find the the self-inductance L when N and cross-sectional area A…

A: The self-inductance for a coil is given as: L=μ0N2Ah Where:        μ0 is the Permeability of Free…

Q: The drawing depicts a copper loop lying flat on a table (not shown) and connected to a battery via a…

A:

Q: How can we calculate the self inductance of a solenoid?

A: Solenoid is a device made by a coil of wire.

Q: The slip of the induction motor depends on the rotor speed of the machine.  Select one: True False

A: True

Q: Question: A wire loop moves at a constant velocity 2.0 m/s through a constant magnetic field of 0.1…

A:

Q: A 650-turn solenoid, 25 cm long, has a diameter of 2.2 cm. A 11-turn coil is wound tightly around…

A:

Q: (L11) A 1.96 A current, constant in time, is applied to a 2.29E-3 H inductor. What is the voltage…

A: Current ( I ) = 1.96 A Inductance ( L ) = 2.29 10-3  H                 or L = 0.00229 H

Q: if the angular speed v of the loop is doubled, then the frequency with which the induced current…

A: Scenario:  Loop's angular speed gets doubled & frequency at which current(induced) changes…

Q: Ex. 86: An A.C. voltage of r.m.s. value 1 V is applied to a parallel combination of inductor L = 10…

A:

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: When the polarity of the voltage applied to a dc motor is reversed, the direction of motion does not…

A: Introduction: The DC motor is an electrical device that converts electrical energy into mechanical…

Q: Why forces are generated for parts of the loop (actually rectangle in Fig 20-37) and not for other…

A: I am answering this question  Why forces are generated for parts of the loop (actually rectangle in…

Q: A long solenoid that has 1 180 turns uniformly distributed over a length of 0.390 m produces a…

A:

Q: Find by explicit integration the magnitude and direction of the force on the square loop shown in…

A: To determine the net force on square loop.

Q: The magnetic flux through a loop of wire is zero. Can there be an induced current in the loop at…

A: Yes, there can be an induced current in the loop at this instant. The induced current I in the loop…

Q: A small loop of area A -4.1 mm2 is inside a long solenoid that has n- 853 turns/cm and carries a…

A: Given data: Area of the small loop, A=4.1 mm2=4.1×10-6 m2 n=853 turns/cm=853×102 turns/m Current,…

Q: An inductor with L = 2.5 H is in a closed circuit with I= 0.45 A (see the diagram). When the switch…

A: Magnetic flux is given by ϕ=LI where L=InductanceI=Current

Q: Conceptual Question: An electric generator utilizes the principle of magnetic induction to generate…

A: We know that an electric generator works under the principle of magnetic induction to generate a DC…

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.