Question

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 .

0 0
Add a comment Improve this question Transcribed image text
Answer #1

dI dt 493x1526x10 16 -1.620x10-3V

Add a comment
Know the answer?
Add Answer to:
Find the induced emf when the current in a 49.3 mH inductor increases from 0 to...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

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
  • The current increases from 15 mA to 60 mA in a 50 mH inductor over 10...

    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

  • 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

  • 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...

  • 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. 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....

  • The current in a 60.0-mH inductor changes with time as i = 3.00t2 − 7.00t, where...

    The current in a 60.0-mH inductor changes with time as i = 3.00t2 − 7.00t, where i is in amperes and t is in seconds. (a) Find the magnitude of the induced emf at t = 1.00 s. =_____mV (b) Find the magnitude of the induced emf at t = 4.00 s. =_____mV (c) At what time is the emf zero? =_____s

  • The current in a 70.0-mH inductor changes with time as i = 2.00ẹ-7.00t, where i is...

    The current in a 70.0-mH inductor changes with time as i = 2.00ẹ-7.00t, where i is in amperes and t is in seconds. (a) Find the magnitude of the induced emf at t 1.00 s mV (b) Find the magnitude of the induced emf at t- 4.00 s. mV (c) At what time is the emf zero?

  • 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...

  • A 45-mH inductor is connected to an ac source of emf with a frequency of 250...

    A 45-mH inductor is connected to an ac source of emf with a frequency of 250 Hz and a maximum emf of 20 V. If the voltage across the inductor is +20 V at time t = 0, what is the voltage at time t = 2.0 ms? A : 0 V       B : −10 V       C :20 V     D : −20 V     E : 10 V

  • 3. + -3.33 points SerPSE10 31. 1.ΟΡ.004 The current in a 70.0-mH inductor changes with time...

    3. + -3.33 points SerPSE10 31. 1.ΟΡ.004 The current in a 70.0-mH inductor changes with time as i = 4.00t -7.00t, where i is in amperes and t is in seconds. (a) Find the magnitude of the induced emf at t- 1.00s. mV (b) Find the magnitude of the induced emf at t4.00 s. mV (c) At what time is the emf zero? Need Help? LReadIt İDwatchitu

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