# Physics

Am i correct?

If a 10.0 kW device pulls 20.0 A of current, what voltage exists across it?

A. 5.0 *10^0 V

B. 5.0 *10^1 V

C. 5.0 *10^2 V

D. 5.0 *10^3 V <---

1. 👍 0
2. 👎 0
3. 👁 275
1. Power = VI, compatible units are W, V, A.

10 kW = V(20 A)

NOTE: 10 kW = 10000 W

1. 👍 0
2. 👎 0
posted by MathMate
2. 10x10^3 W
10,000/ 2A
= 5000
which would be D right?

1. 👍 0
2. 👎 0
posted by Me and I
3. i mean its, C :)
10,000/ 20 A
= 500

1. 👍 0
2. 👎 0
posted by Me and I
4. That's correct!

1. 👍 0
2. 👎 0
posted by MathMate

## Similar Questions

1. ### ECE

Assume that a device exists between two nodes A and B of a circuit and that the voltages of these two nodes A and B are equal to 2V and -3V respectively What is the voltage drop across the device? So I think I just go A-B , but it

asked by sara on January 15, 2016
2. ### physics

An electrical device with a resistance of 323.0 k(omega sign) will allow a current of 21.0 A to flow through it if a voltage drop of _______________ Volts is impressed across the device.

asked by Alyson on October 27, 2009
3. ### Physics

Thanks for any help :) Four 20 ohm resistors are connected in parallel and the combination is connected to a 20V emf device. The current is: A) 0.25A B) 1.0 A C) 4.0 A D) 5.0 A E) 100 E Parallel circuits: I know that the voltage

asked by susane on March 15, 2007
4. ### Electricity and Electronics

A complete circuit contains two parallel-connected devices and a generator for providing the electromotive force. The resistance of the first device is 12 ohms, the resistance of the second device is 4 ohms, and the voltage

asked by Dave on February 24, 2015
5. ### Physics

1. Ohm's Law states that for some circuits the voltage is proportional to the current. In other words, if you double the voltage, you will double the current. Which of these equations agrees with this statement of Ohm's Law? (∝

asked by John on April 18, 2013

In this section, we talked about combining a solar cell with a photoelectrode to form a photoelectrochemical device. Why do we add a solar cell in the system? a)Because the photoelectrode is not able to produce any voltage

asked by hitesh on November 6, 2013
2. ### Physical Science: Series Circuit

There is a circuit of 2 lamps in a series. If a voltage of 6 volts is impressed across the circuit and the voltage across the 1st lamp is 2 volts, what is the voltage across the second lamp? Defend your answer I want to say that

asked by Britney on October 5, 2009
3. ### physics

A particular amplifying device supplies electrons in a manner such that the current passing out of the device is given by I(t) = (Io)e^kt, where I(0) = Io = 2A.The current measured 12 seconds later is 3.4 A.Find (a)The charge Q

asked by Sandhya on March 25, 2011
4. ### Science

If you add a battery to a series circuit, what will happen to the current in the circuit? A. The current both stayed the same since there is the same resistance B. The comment will increase since there is less resistance C. The

asked by Sara on February 11, 2016
5. ### Physics

A series RCL circuit contains only a capacitor (C=6.60 F), an inductor (L=7.20 mH), and a generator (peak voltage=32.0 V, frequency=1.50x10^3 Hz). When t  0 s, the instantaneous value of the voltage is zero, and it rises to a

asked by Anonymous on March 25, 2014

More Similar Questions