# Chemistry

A step-down transformer has 200 turns of wire in its primary coil. How many turns are in the secondary coil if the input voltage = 120V, and the output voltage = 6V

1. 👍
2. 👎
3. 👁
1. well, the ratio is 120:6 = 20:1 = 200:10

1. 👍
2. 👎
👤
oobleck

## Similar Questions

1. ### physics i need help

A student is comparing a step-up transformer with a step-down transformer. Which data should she collect from each device? the ratio of incoming and outgoing currents the ratio of incoming and outgoing voltages the ratio of the

2. ### Physics

Which of the following is correct for a step-down transformer? Number of turns in the primary coil is less than the number of turns in the secondary coil. Step-down transformer increases the voltage from low value to high value.

3. ### Physics

A step-up transformer used on a 120 V line has 95 turns on the primary and 2850 turns on the secondary. What is the emf across the secondary? A. 30 V B. 1800 V C. 2400 V D. 3600 V

4. ### physics- magnetism

A step-up transformer used in a car has a potential difference of 10 V across the primary coil with 12 turns. What is the current in the secondary coil of resistance 2.5 Ω if the number of turns in the secondary coil is 54 turns?

1. ### Physics

A transformer is to be used to provide power for a computer disk drive that needs 5.8 V (rms) instead of the 120 V (rms) from the wall outlet. The number of turns in the primary is 414, and it delivers 500 mA (the secondary

2. ### Physics

a transformer with 600 turns in the primary coil is connected to a 120v AC source. If the transformer is to have (3) separate secondary coils that need to give a) 2.5v, b) 6.0v, and c) 450v, then how many turns should each coil

3. ### Chemistry

What is the ratio of turns for the secondary to primary coils in a step-down transformer, if the input voltage from a substation is 7200 V, and the output voltage to a home is 240 V

4. ### Physics

The generator at a power plant produces AC at 24,000 V. A transformer steps this up to 345,000 V for transmission over power lines. If there are 2,000 turns of wire in the input coil of the transformer, how many turns must there

1. ### physics prob.

An ideal transformer has 50 turns in its primary coil and 250 turns in its secondary coil. 12 V is connected to the primary. a)find the voltage across the secondary coil. b) find the current in a 10-ohms device connected to the

2. ### Physics problem

A transformer has 50 turns in its primary coil and 250 turns in its secondary coil. 12V is connected to the primary. a. Find the voltage across the secondary coil. b. Find the current in a 10 ohm device connected to the secondary.

3. ### Physics

In a step-up transformer, which of the following statements is correct? Number of turns in primary is equal to number of turns in the secondary. Number of turns in primary is more than the number of turns in the secondary. Number

4. ### Physics

A portable CD player requires 12 volts to operate. A transformer allows the device to be powered from a 120-volt outlet. If the primary has 500 turns, how many turns should the secondary have?