ZuoTi.Pro
Question

A permanent magnet is dropped south-end-down through a horizontal circular coil with a radius of 10...

A permanent magnet is dropped south-end-down through a horizontal circular coil with a radius of 10 cm, having 200 turns, and a total resistance of 5π ohms. Find the magnitude and direction of the current induced in the coil when the magnet has passed through and the field through the coil is decreasing at 40 mT/s.

science   physics   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

0 0
Add a comment
Know the answer?
Add Answer to:
A permanent magnet is dropped south-end-down through a horizontal circular coil with a radius of 10...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • in a lecture demonstration, a bar magnet is moved toward a 2,000 "turn" circular coil such...

    in a lecture demonstration, a bar magnet is moved toward a 2,000 "turn" circular coil such that the magnetic field is perpendicular to the area inside of the coil and increases uniformly from 20.0mT to 130.0 mT in 0.250 s. The diameter of the turns is 15.0 cm and the entire coil has a resistance of 3.00 ohms. What is the current induced in the coil and how much energy is produced as "Joule heat" in the wire turns over...

  • 3) A permanent magnet of length L is dropped from a height H through a coil....

    3) A permanent magnet of length L is dropped from a height H through a coil. What is the ratio of the emf induced in the coil at the moment the bottom of the magnet enters the coil to the emf induced in the coil at the moment the top of the magnet leaves the coil?

  • A circular coil of 200 turns, with a radius of 8 cm, is dropped vertically into...

    A circular coil of 200 turns, with a radius of 8 cm, is dropped vertically into a very long solenoid, which has a radius of 12 cm, 300 turns / m, and which conducts a current of 3 A. What is the value of the emf induced in the coil that is in free fall, due to the magnetic field of the solenoid?

  • A circular coil of 200 turns, with a radius of 8 cm, is dropped vertically into...

    A circular coil of 200 turns, with a radius of 8 cm, is dropped vertically into a very long solenoid, which has a radius of 12 cm, 300 turns / m, and which conducts a current of 3 A. What is the value of the emf induced in the coil that is in free fall, due to the magnetic field of the solenoid ?. Express your answer in detail.

  • You throw a bar magnet downward with its south end pointing down (see figure below). The...

    You throw a bar magnet downward with its south end pointing down (see figure below). The bar magnet has a magnetic dipole moment of 1.6 A·m2. Lying on the table is a nearly flat circular coil of N= 1175 turns of wire, with radius R= 6 cm. The coil is connected to an oscilloscope, which has a very large resistance. At the instant when the magnet is h= 30 cm above the table, the oscilloscope indicates a voltage of magnitude...

  • A circular coil of wire with a radius 4 cm and 150 Turns is placed in...

    A circular coil of wire with a radius 4 cm and 150 Turns is placed in a uniform magnetic field of magnitude 0.6 T. The magnetic field is parallel to the area vector; I.e. perpendicular to the plane of the coil. A)What is the magnetic flux through the coil? B)The magnetic field is decreased to 0T in .1 seconds. What is the magnitude of the emf induced in the coil during this time interval?C) If the coil has a resistance...

  • The sketches below show a circular coil and a permanent magnet; the arrows indicate both the...

    The sketches below show a circular coil and a permanent magnet; the arrows indicate both the magnitude and the direction of the velocities of the magnet and coil. In which situations will the induced voltage (and hence the current) in the loop be zero? (Enter your answer in alphabetical order, without spaces or commas, e.g., AF.)

  • 1. (20 pts) A circular coil with a radius of 8.0 cm is dropped from a...

    1. (20 pts) A circular coil with a radius of 8.0 cm is dropped from a location where the magnetic field is 0.2 T into a region where the magnetic field is 1.6 T. The coil takes 0.12 s to fall, has 60 turns and is perpendicular to the magnetic field. The field does not change direction. a. Find the average induced emf in the coil as a result of this action. b. If the induced current flows clockwise as...

  • 1. A 85 turn elastic circular coil of wire initially has a radius of 74.2 cm...

    1. A 85 turn elastic circular coil of wire initially has a radius of 74.2 cm and is immersed in a uniform magnetic field with a strength of 0.495 T. At t 0, the coil is released and begins decreasing in radius at a constant rate of 7.22 cm/s. While it contracts, the number of turns does not change. a) Write the magnetic flux through a single turn of the coil as a function of time. (Hint: What causes the...

  • A flat circular coil of 1 cm radius consists of 5 tightly packed turns and is...

    A flat circular coil of 1 cm radius consists of 5 tightly packed turns and is rotated at 10 revolutions per second about an axis that is perpendicular to a uniform magnetic field of magnitude 3.5 T. If the coil has an internal resistance of 0.25 Ohms, what is the magnitude of the peak current induced in the coil? 3.5 A 2.9 A 1.4 A 6.3 A 0.74 A

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT