ZuoTi.Pro
Question

An 80-turn coil that has a radius equal to 5cm and a resistance equal to 30...

An 80-turn coil that has a radius equal to 5cm and a resistance equal to 30 ohms sits in a region that has a magnetic field normal to the plane of the coil. At what rate must the magnitude of the magnetic field change to produce a current of 4A in the coil?

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

Homework Answers

Answer #1

Induced EMF E- - It 0-0 id(BANASO) dt E =-NA ab where E=IR where ET - at dB - E IR NA - N(T9) 4x30 50 (3-14 (5 xio 2) db = 19

0 0
Add a comment
Know the answer?
Add Answer to:
An 80-turn coil that has a radius equal to 5cm and a resistance equal to 30...
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

  • A circular coil of radius 0.11 m contains a single turn and is located in a...

    A circular coil of radius 0.11 m contains a single turn and is located in a constant magnetic field of magnitude 0.25 T. The magnetic field has the same direction as the normal to the plane of the coil. The radius increases to 0.31 m in a time of 0.080 s. a) Determine the magnitude of the emf induced in the coil. b) The coil has a resistance of 0.71 Ω. Find the magnitude of the induced current.

  • A circular coil of radius 0.120 m contains a single turn and is located in a...

    A circular coil of radius 0.120 m contains a single turn and is located in a constant magnetic field of magnitude 0.250 T. The magnetic field has the same direction as the normal to the plane of the coil. The radius increases to 0.320 m in a time of 0.0780 s. (a) Determine the magnitude of the emf induced in the coil. (b) The coil has a resistance of 0.640 Ω. Find the magnitude of the induced current.

  • A circular coil of radius 0.100 m contains a single turn and is located in a...

    A circular coil of radius 0.100 m contains a single turn and is located in a constant magnetic field of magnitude 0.270 T. The magnetic field has the same direction as the normal to the plane of the coil. The radius increases to 0.310 m in a time of 0.0730 s. (a) Determine the magnitude of the emf induced in the coil. (b) The coil has a resistance of 0.790 . Find the magnitude of the induced current. (a) Number...

  • 1) A 179‑turn circular coil of radius 3.55 cm and negligible resistance is immersed in a...

    1) A 179‑turn circular coil of radius 3.55 cm and negligible resistance is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. The coil is connected to a 13.7 Ω resistor to create a closed circuit. During a time interval of 0.121 s, the magnetic field strength decreases uniformly from 0.643 T to zero. Find the energy, in millijoules, that is dissipated in the resistor during this time interval. energy: mJ 2) You decide...

  • 9. A 30-turn circular coil of radius 4 cm and resistance 1 Ω is placed in...

    9. A 30-turn circular coil of radius 4 cm and resistance 1 Ω is placed in a magnetic field directed perpendicu- lar to the plane of the coil. The magnitude of the mag- netic field varies in time according to the expression B 0.01t+0.04t2, where t is in s and B is in T. Calcu- late the induced emf in the coil at t 5 s.

  • A 65-turn circular coil (radius = 31 cm) with a total resistance of 5.4 ? is...

    A 65-turn circular coil (radius = 31 cm) with a total resistance of 5.4 ? is placed in a uniform magnetic field directed perpendicular to the plane of the coil. The magnitude of this field varies with time according to B = A sin(?t), where the amplitude is A = 110 ?T and the angular frequency is ? = 50 ? rad/s. What is the magnitude of the current (in mA) induced in the coil at t = 39 ms?

  • A rectangular coil has N = 80 turns and each turn has a width a =...

    A rectangular coil has N = 80 turns and each turn has a width a = 20.0 cm and a height b = 30.0 cm. The top half the coil is located in a region that has a magnetic field of magnitude B = 0.800 T directed into the page. The resistance R of the coil is 30.0 W. Find the magnitude and direction of the induced current if the coil is moved with a speed of 2.00 m/s (a)...

  • A 23-turn circular coil of radius 3.00 cm and resistance 1.00 is placed in a magnetic...

    A 23-turn circular coil of radius 3.00 cm and resistance 1.00 is placed in a magnetic field directed perpendicular to the plane of the coil. The magnitude of the magnetic field varies in time according to the expression B = 0.010 Ot + 0.040 ot, where B is in teslas and t is in seconds. Calculate the induced emf in the coil at t = 5.20 s. 2.77 If the flux is changing as a function of time, how do...

  • A 32-turn circular coil of radius 4.80 cm and resistance 1.00 Ω is placed in a...

    A 32-turn circular coil of radius 4.80 cm and resistance 1.00 Ω is placed in a magnetic field directed perpendicular to the plane of the coil. The magnitude of the magnetic field varies in time according to the expression B = 0.010 0t + 0.040 0t2, where B is in teslas and t is in seconds. Calculate the induced emf in the coil at t = 5.20 s.    If the flux is changing as a function of time, how...

  • A 20-turn coil with radius 4 cm lies in the x-y plane. The coil has a...

    A 20-turn coil with radius 4 cm lies in the x-y plane. The coil has a total resistance of 5 Ω. The coil is in the presence of a uniform 0.25 T magnetic field oriented 15° with respect to the positive z-axis. Give the direction (clockwise or counter-clockwise) and magnitude of the current that will be induced in the coil by the field. Additionally what happens to the value of the induced current if the magnetic field changes to 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