HomeworkLib
Question

The current increases from 15 mA to 60 mA in a 50 mH inductor over 10 s. What is the induced emf across the inductor? (in V) Inductance is when a change in the current flowing through a circuit produces an induced emf voltage ε-L Δ1 /At that opposes the change L is inductance, I is current, t is time Submit Answer Incorrect. Tries 1/2 Previous Tries Post Discussion Send Feedback

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

Homework Answers

Answer #1

V = L * dI / dt

= [ 50 * 10-3 * (60 - 15) * 10-3 ] / 10

emf induced across inductor = 2.25 * 10-4 V = 0.000225 V

0 0
Add a comment
Know the answer?
Add Answer to:
The current increases from 15 mA to 60 mA in a 50 mH inductor over 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

  • Problem 4. A 10 mH inductor has a sudden current change from 200 mA to 100...

    Problem 4. A 10 mH inductor has a sudden current change from 200 mA to 100 mA in 1 ms. Find the induced voltage. Problem 5. A induced voltage across a 10 mH inductor is v(t) 120 cos (377t) V. Find (a) the expression for the inductor current and (b) the expression for the power. The current in a 25 mH inductor is given by the expressions: i(t) 0 i(t) 10 (1-e) mA Find the voltage across the inductor and...

  • Find the induced emf when the current in a 49.3 mH inductor increases from 0 to...

    Find the induced emf when the current in a 49.3 mH inductor increases from 0 to 526 mA in 16.0 ms .

  • a.) An inductor carries a current of 4.4 A, and the magnetic energy stored in the...

    a.) An inductor carries a current of 4.4 A, and the magnetic energy stored in the inductor is 0.0022 J. What is the inductance?   mH b.) An inductor with L = 1.4 mH is connected to a circuit that produces a current increasing steadily from 1.8 A to 5.2 A over a time of 2.6 s. What is the voltage across the inductor? mV

  • 1. An inductor (L = 250 mH) is connected to a varying voltage supply: a. At...

    1. An inductor (L = 250 mH) is connected to a varying voltage supply: a. At a particular moment in time when the circuit carries a current of 4.0 A, what is the energy stored in the inductor? A. 0.50 J B. 2.0) C. 5.0J D. 20. J E. 50.J b. If the current drops from 4.0 A to 1,0 A during 500. ms, what is the average) emf induced across the inductor during that time? A. 0.33 V B....

  • 2. A 33-mH inductor is directly connected to a varying current supply. a. During a “ramp...

    2. A 33-mH inductor is directly connected to a varying current supply. a. During a “ramp up” period of 40. ms, the current through the inductor increases linearly from 0.50 to 1.00 A. What is the average emf induced across the inductor during this time period? A. 0.19 V D. 0.41 V B. 0.26 V E. 0.52 V C. 0.33 V b. The self-induced emf (across the inductor) will be... A. in the same direction as the current B. opposite...

  • 1. A 2-H INDUCTOR DRIVES A CURRENT OF 0.5 AMP WHEN THE CIRCUIT IS OPENED THE...

    1. A 2-H INDUCTOR DRIVES A CURRENT OF 0.5 AMP WHEN THE CIRCUIT IS OPENED THE CURRENT DISAPPEARS IN 0.01 SEC, CALCULATE THE EMF. 2. CALCULATE THE MAGNETIC FLOW THROUGH A COIL OF 7.2 Mh WITH 300 ROLLS WHEN i=10 mAmp 3. THE CURRENT IN A 0.02-H INDUCTOR VARY ACCORDING TO I-3t 4t CALCULATE a. Emf at t=1 sec and t = 5 sec b. So that the value of t the Emf induced is zero 4. A SOLENOID HAS...

  • The current in a 6.00 mH-inductor varies in time as shown. Construct a graph of the...

    The current in a 6.00 mH-inductor varies in time as shown. Construct a graph of the self-induced emf across the inductor over the time interval t= 0 to t= 12.0 ms i (mA) 3 2 1 (ms) 2 4 6 8 10 12 -1 -2

  • The current in a 200 mH inductor is i = 75 mA, t < 0; -50+...

    The current in a 200 mH inductor is i = 75 mA, t < 0; -50+ i= (B1 cos 200t + B2 sin 200t) e A, t>0, where t is in seconds. The voltage across the inductor (passive sign convention) is 4.25 V at t = 0. Part A Calculate the power at the terminals of the inductor at t = 28 ms Express your answer to three significant figures and include the appropriate units. μΑ p = Value Units...

  • An L-C circuit consists of an inductor with an inductance of 65.0 mH and a capacitor...

    An L-C circuit consists of an inductor with an inductance of 65.0 mH and a capacitor with a capacitance of 250 μF . The initial charge on the capacitor is 5.50 μC , and the initial current in the inductor is zero. a) What is the maximum voltage across the capacitor? b) What is the maximum current in the inductor? c) What is the maximum energy stored in the inductor? d) When the current in the inductor has half its...

  • IT Chapter 6, Problem 6.30 (Circuit Solution) CHG The current in a 60-mH inductor is given...

    IT Chapter 6, Problem 6.30 (Circuit Solution) CHG The current in a 60-mH inductor is given in the figure below. Find the inductor voltage i(t) (mA) 100 - 8 10 t (ms -100 100-- 6.09 10 100

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