Question

a step down transformer is used for recharging the batteryof portable devices. the rturns ratio for...

a step down transformer is used for recharging the batteryof portable devices. the rturns ratio for a piticalyr transformer used in a radio is 1:13 when used with 120 b household service the transformer draws an rms current of 250 ma find (a) rms output voltage of the transformer (b) power delivered by the radio

Science   Advanced-Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

a) We have the relation between the input and output voltage of an ideal transformer to the number of turns by the equation,

Where V2 is the output voltage,

V1 is the input voltage

is the ratio of number of turns,

So, the output rms voltage is given,

b) The input and output current is given by the relation..

So, the output current is given by,

The power delivered is given by,

The power delivered is 30 W.

0 0
Know the answer?
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
Similar Questions
A step-down transformer is used for recharging the batteries of portable devices. The turns ratio N2/N1...
A step-down transformer is used for recharging the batteries of portable devices. The turns ratio N2/N1 for a particular transformer used in a CD player is 3:37. When used with 120-V (rms) household service, the transformer draws an rms current of 125 mA. (a) Find the rms output voltage of the transformer. V (b) Find the power delivered to the CD player. W
a common device used in electronic equipment in the home is a step-down transformer. compare to...
a common device used in electronic equipment in the home is a step-down transformer. compare to the Input, this transformer will cause the output voltage to input, this transformer will cause the output voltage to______, The output current two _____ and the electrical power to______. fill in the blank with increase, decrease, or remains the same.
a) An ideal step-down transformer has a primary coil of 400 turns and a secondary coil...
a) An ideal step-down transformer has a primary coil of 400 turns and a secondary coil of 14 turns. Its primary coil is plugged into an outlet with 240 V(AC), from which it draws an rms current of 0.35 A. What is the voltage in the secondary coil? b) Calculate the rms 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 370 turns and a secondary coil of...
An ideal step-down transformer has a primary coil of 370 turns and a secondary coil of 25 turns. Its primary coil is plugged into an outlet with 115 V(AC), from which it draws an rms current of 0.69 A. What is the voltage in the secondary coil? Calculate the rms current in the secondary coil. Assuming that the transformer secondary is driving a resistive load, calculate the average power dissipated in the resistor.
A step-down transformer can step down the input voltage down to a lower voltage. Imagine a...
A step-down transformer can step down the input voltage down to a lower voltage. Imagine a step-down transformer whose input is 2.5-kV supplies a load with 80 A. The primary winding is N1, the secondary winding is N2, and the ratio N1/N2 is 20. Calculate the power output in kW.
A transformer connected to a 120 −V ac line is to supply 12.0 VV (rms) to...
A transformer connected to a 120 −V ac line is to supply 12.0 VV (rms) to a portable electronic device. The load resistance in the secondary is 5.20 ΩΩ . - What should the ratio of primary to secondary turns of the transformer be, What rms current must the secondary supply? - What average power is delivered to the load, What resistance connected directly across the source line (which has a voltage of 120 −V) would draw the same power...
An AC adapter for a telephone answering machine uses a transformer to reduce the line voltage...
An AC adapter for a telephone answering machine uses a transformer to reduce the line voltage of 120 V to a voltage of 4.00 V. The RMS current delivered to the answering machine is 350 mA. If the primary (input) coil of the transformer has 720 turns, then how many turns are there on the secondary (output) coil? What is the power drawn from the electric outlet, if the transformer is assumed to be ideal? What is the power drawn...
An AC adapter for a telephone answering machine uses a transformer to reduce the line voltage...
An AC adapter for a telephone answering machine uses a transformer to reduce the line voltage of 120 V to a voltage of 4.00 V. The RMS current delivered to the answering machine is 660 mA. If the primary (input) coil of the transformer has 600 turns, then how many turns are there on the secondary (output) coil? What is the power drawn from the electric outlet, if the transformer is assumed to be ideal? What is the power drawn...
The “power cube” transformer for a portable CD player has an output of 4.5 V and...
The “power cube” transformer for a portable CD player has an output of 4.5 V and 500 mA (both rms) when plugged into a 120V/60Hz outlet. Part A If the primary coil has 1220 turns of wire, how many turns are on the secondary coil? I found the answer to part A: N=46 turns. Part B What is the peak current in the primary coil?
An AC adapter for a telephone answering machine uses a transformer to reduce the line voltage...
An AC adapter for a telephone answering machine uses a transformer to reduce the line voltage of 120 V to a voltage of 5.00 V. The RMS current delivered to the answering machine is 470 mA. If the primary (input) coil of the transformer has 600 turns, then how many turns are there on the secondary (output) coil? What is the power drawn from the electric outlet, if the transformer is assumed to be ideal? What is the power drawn...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT