Question

How does the homopolar motor work? Draw a diagram to illustrate the direction of current flow,...

How does the homopolar motor work? Draw a diagram to illustrate the direction of current flow, magnetic fields, and the force on the wire. Explain why it is not necessary to switch the polarity of current (hence “homopolar”) on this motor.

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

A homopolar motor uses direct current to power rotational movement.This motor is driven by the Lorentz force.When a current carrying conductor is placed in a magnetic field which is perpendicular to the current, it experiences a force in the direction perpendicular to both the magnetic field and the current.This force provides a torque for the rotational movement of the conductor(wire). In homopolar motor, the axis of rotation is parallel to the magnetic field and that is why the opposing magnetic field do not change polarity.

Fig : Current , Magnetic field lines & Lorentz force on Homopolar motor

The & shows the Lorentz force on the wire.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
2 long, parallel wires carry current I in the same direction and are separated by a...
2 long, parallel wires carry current I in the same direction and are separated by a distance R. (a) Solve for the magnitude/direction of the magnetic field of the first wire at the location of the second wire. (Be sure to draw a picture and label your axes in order to explain your answer.) (b) Solve for the magnitude/direction of the force per unit length of the first wire on the second wire. (Be sure to draw a picture and...
A circular loop of wire in the xy plane has a current flow clockwise through it...
A circular loop of wire in the xy plane has a current flow clockwise through it as viewed from the +z direction. There is a uniform external magnetic field applied to the loop in the +x direction. What is the direction of the net force of the magnetic field on the loop? a) +y b) -y c) -z d) There is no net force on the loop. Magnetic fields a) Can have a net flux out of a closed surface....
1. The direct current flowing through a coil of a wire in increased. What will happen...
1. The direct current flowing through a coil of a wire in increased. What will happen to the magnetic force produced in the coil? a. it will increase b. it will decrease c. it remains unchanged d. the north pole will switch places with the south pole 2. A copper wire remains stationary within a magnetic field. What can be said about the force applied to the wire? a. it will tend to force the wire away from the field...
does the current flow in the same direction for the charging and discharging part? ( how...
does the current flow in the same direction for the charging and discharging part? ( how do you know) why are they in the same/opposite direction? thank you
Explain how electric and magnetic fields are related to the current in the wire. Why is...
Explain how electric and magnetic fields are related to the current in the wire. Why is the electric field in phase with the magnetic field?
Sketch a diagram or a flow chart to explain how does the autonomic nervous system exert...
Sketch a diagram or a flow chart to explain how does the autonomic nervous system exert its effects on its target tissue and organs. Give a specific example to illustrate your response.
1.Watch the video on magnetism. Explain how the “two” right hand rules works –what does each...
1.Watch the video on magnetism. Explain how the “two” right hand rules works –what does each indicate? 2.How do magnetic fields get their start - what causes magnetic fields? 3.What is the force a magnetic field exerts on a charged particle?  Write down the equation and explain the direction.
How do you find the magnetic force acting on a 3m-long current-carrying section of wire of...
How do you find the magnetic force acting on a 3m-long current-carrying section of wire of a given length if it sits in an external magnetic field (current = .01 Amps, magnetic field = .00002 teslas)? In what orientation(s) does it have to be placed to feel this force? The moving charges on the wire also produce a magnetic field of their own, how do I calculate this magnetic field at a distance of 1 meter from the wire? (if...
(c) Draw a diagram to illustrate the case of perfect competition where there is a negative...
(c) Draw a diagram to illustrate the case of perfect competition where there is a negative production externality. Show how, if the production externality is ignored, output will differ compared to the alternative where society’s needs are taken into account. Explain briefly how a tax could be relevant in achieving the social optimum (a) Sketch the Average Fixed Cost curve for a firm, and explain why it is the shape you have shown it. (b) Explain why it might be...
1- What are slip and slip speed in an induction motor? 2- How does an induction...
1- What are slip and slip speed in an induction motor? 2- How does an induction motor develop torque? 3- Why is it impossible for an induction motor to operate at synchronous speed? 4- Sketch and explain the shape of a typical inductionmotor torque-speed characteristic curve? Make the work clear, understandable and readable please. Thanks!
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT