Question

The 200- turn primary coil of a step‑down transformer is connected to an AC line that...

The 200- turn primary coil of a step‑down transformer is connected to an AC line that is 120.0 V (rms). The secondary coil is to supply 10.0 A (rms) at 11.4 V (rms). Assuming no power loss in the transformer, what is the number of turns ?s in the secondary coil?

?s= turns

What is the rms current ?p,rms in the primary coil?

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

Given that

N1 = 200

V1 = 120 V

I2 = 10 A

V2 = 11.4 V

Now we know that

N1/N2 = V1/V2 = I2/I1

a)

200/N2 = 120/11.4

N2 = 200*11.4/120 = 19 turns

b) 120/11.4 = 10/I1

I1 = 0.95 amp

Add a comment
Know the answer?
Add Answer to:
The 200- turn primary coil of a step‑down transformer is connected to an AC line that...
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
  • An ideal step-down transformer has a primary coil of 400 turns and a secondary coil of...

    An ideal step-down transformer has a primary coil of 400 turns and a secondary coil of 25 turns. Its primary coil is plugged into an outlet with 110 V(AC), from which it draws an rms current of 0.83 A. 1.)What is the voltage in the secondary coil? 2.)Calculate the rms current in the secondary coil. 3.)Assuming that the transformer secondary is driving a resistive load, calculate the average power dissipated in the resistor.

  • A step-down transformer has 83 turns in its primary coil and 24 turns in its secondary...

    A step-down transformer has 83 turns in its primary coil and 24 turns in its secondary coil. The primary coil is connected to standard household voltage (rms = 120.0 V, 60.0 Hz). Suppose the secondary coil is connected to a 12.0-Ω resistor. (a) What is the maximum current in the resistor? (b) What is the average power dissipated by the resistor?

  • 1. A current of 7.19 A in a long, straight wire produces a magnetic field of...

    1. A current of 7.19 A in a long, straight wire produces a magnetic field of 4.87 μT at a certain distance from the wire. Find this distance. 2. What is the rms current flowing through a light bulb that uses an average power of 30.0 W when it is plugged into a wall receptacle supplying an rms voltage of 240.0 V? 3. The 400-turn primary coil of a step‑down transformer is connected to an AC line that is 120.0...

  • A 120 V (rms) power line is connected to the primary of a step-down transformer, with...

    A 120 V (rms) power line is connected to the primary of a step-down transformer, with a turn ratio of 12 : 1. The transformer’s secondary is connected to a doorbell, which requires 10.2 W of electric power for its operation. What is the peak instantaneous current in the primary?

  • The primary 40-turn coil of an ideal transformer is supplied with 120 V (rms). If the...

    The primary 40-turn coil of an ideal transformer is supplied with 120 V (rms). If the rms voltage output of the secondary coil is 15 V, how many turns are in the secondary coil, and what type of transformer is this? 8 turns, step-down transformer 5 turns, step-down transformer 15 turns, step-down transformer 320 turns, step-up transformer 160 turns, step-up transformer

  • An ideal step-down transformer has a primary coil of 370 turns and a secondary coil of...

    An ideal step-down transformer has a primary coil of 370 turns and a secondary coil of 22 turns. Its primary coil is plugged into an outlet with 115 V, from which it draws a current of 0.29 A. (a) What is the voltage in the secondary coil? (b) Calculate the current in the secondary coil? (c) Assuming that the transformer secondary is driving a resistive load, calculate the average power dissipated in the resistor.

  • An ideal step-down transformer has a primary coil of 350 turns and a secondary coil of...

    An ideal step-down transformer has a primary coil of 350 turns and a secondary coil of 10 turns. Its primary coil is plugged into an outlet with 220 V (AC). If the current in the secondary coil is 14.35 A, what current does the primary coil draw?

  • A transformer connected to a 125 V (rms) ac line is to supply 12000 V (rms)...

    A transformer connected to a 125 V (rms) ac line is to supply 12000 V (rms) for a neon sign. To reduce shock hazard, a fuse is to be inserted in the primary circuit; the fuse is to blow when the rms current in the secondary circuit exceeds 5.00 mA. (a) What is the ratio of secondary to primary turns of the transformer? (secondary/primary) (b) What power must be supplied to the transformer when the rms secondary current is 5.00...

  • Problem 9. (0.2 pts). An ideal step-down transformer has a primary coil of 370 turns and...

    Problem 9. (0.2 pts). An ideal step-down transformer has a primary coil of 370 turns and a secondary 22 turns. Its primary coil is plugged into an outlet with 115 V, from which it draws a current coil of of 0.29 A. (a) What is the voltage in the secondary coil? (b) Calculate the current in the secondary coil? (c) Assuming that the transformer secondary is driving a resistive load, calculate the average power dissipated in the resistor.

  • A transformer has 1020 turns in the primary and 12 turns in the secondary. (a) Is...

    A transformer has 1020 turns in the primary and 12 turns in the secondary. (a) Is this a step-up or step-down transformer? (b) If the primary is connected across 120 V rms, what is the open-circuit voltage across the secondary? ( ) V (c) If the primary current is 0.3 A, what is the secondary current, assuming negligible magnetization current and no power loss? ( ) 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
Active Questions
ADVERTISEMENT