# algebra

The power (P) required to run a motor is equal to the voltage (E) applied to that motor times the current (I) supplied to the motor. If the motor data says the motor uses 180 watts of power and the voltage applied to the motor is 120 volts, how much current will the motor require?

1. 👍 0
2. 👎 0
3. 👁 184
1. Assume DC current where voltage is constant.

P=EI
P=180 w
E=120 v
Solve for I (answer in ampères)

1. 👍 0
2. 👎 0

## Similar Questions

1. ### physics

I have to build a mini solar car for a school project and i have three solar cells that i bought. whenever i hook up the solar cells i get a reading between 1.5-1.8 volts, but when i hook it up to the motor it wont start it.

asked by Matt on May 6, 2007
2. ### Physics

An elevator weighing 400kg is to be lifted up at a constant velocity of 0.6m/s for this purpose a motor of required horse power is used. (g=9.8m/s).(a)What is the acceleration of motor in case of upward motion? (b)What is power of

asked by Faizankhan on July 23, 2017
3. ### Physics

A 120-V motor has mechanical power output of 2.00 hp. It is 82.0% efficient in converting power that it takes in by electrical transmission into mechanical power. (a) Find the current in the motor (b) Find the energy delivered to

asked by Jessi on October 18, 2009
4. ### physics

A 120-V motor has mechanical power output of 2.20 hp. It is 92.0% efficient in converting power that it takes in by electrical transmission into mechanical power. (a) Find the current in the motor (A) (b) Find the energy delivered

asked by priya on September 5, 2013
5. ### physics

A 120-V motor has mechanical power output of 3.20 hp. It is 81.0% efficient in converting power that it takes in by electrical transmission into mechanical power. (a) Find the current in the motor. Answer: 24.6A (b) Find the

asked by iva on May 2, 2011
6. ### physics question

a forklift lifts a 100 kg of concrete through a vertical height of 16 m in 20 sec.the power applied to the motor un driving the forklift is 1kw.a) calculate the work done every second in lifting the concrete block.b) what is the

asked by pherlysstar on April 7, 2017
7. ### Physics

Searches related to a motor lifts an elevator of mass m at constant speed. The power output of the motor is P and there are no frictional losses so that all the power output from the motor goes into lifting the elevator mass. What

asked by Bobby on November 10, 2016
8. ### physics

In periods of peak demand, power companies lower their voltage. This saves them power (and saves you money!). To see the effect, consider a 1200- W coffeemaker that draws 10 A when connected to 120 V. Suppose the voltage is

asked by Kristie on April 19, 2012
9. ### physics

In periods of peak demand, power companies lower their voltage. This saves them power (and saves you money!). To see the effect, consider a 1200- W coffeemaker that draws 10 A when connected to 120 V. Suppose the voltage is

asked by Kristie on April 20, 2012
10. ### Physics

A motor lifts an elevator of mass m at constant speed. The power output of the motor is P and there are no frictional losses so that all the power output from the motor goes into lifting the elevator mass. What is the correct

asked by Bobby on November 10, 2016

More Similar Questions