## DrPepperx3 one year ago help? 2 questions medal c:!

1. DrPepperx3

1.A 2000 W toaster operates on a household circuit of 200 V. What is the resistance of the wire the make up the heating element of the toaster?

2. ksaimouli

Resistance = Voltage / Current

3. DrPepperx3

0.1?

4. ksaimouli

Si unit of current is amp but they gave us power

electric power (watts)=votlage*amperage, amperage=voltage/resistance so 2000W=200V*Amperage (10amp). 10amp=200V/resistance (20)

20 ohms

7. ksaimouli

$power=\frac{ V }{ I }$

8. ksaimouli

solve for V

9. ksaimouli

from above equation

10. DrPepperx3

ty :) @ksaimouli and @SalvadorV kk hold on

you have the intensity formula wrong

12. DrPepperx3

me?

sorry the power formula

P=V*I

15. DrPepperx3

oh so I got it wrong?

yes, Watts=Volts*Amps Amps=Volts/Ohms

17. DrPepperx3

oh wait im confused .-. sorry

watts=volts^2/ohms 2000=200^2/ohms ohms=200^2/2000 = 40 000/2000=20 ohms

don't worry, we all make mistakes

20. DrPepperx3

I feel stupid :l but what is ohms?

21. ksaimouli

resistance (unit)

ohms is the measure for resistance

23. DrPepperx3

oohh ok! ty for helping me c: do you mind helping with 1 more?

and ksaimouli has his formula wrong .-.

sure

26. DrPepperx3

that's why I got confused :c and kk

27. DrPepperx3

2.An electronic device is rated at 0.35 W when connected to 150 V. What is the resistance of this device?

see, its the same kind of question so $0.35W=150V*amps$

so $amps=\frac{ 0.35W }{ 150V }$

30. DrPepperx3

I was just about to put that lol

31. DrPepperx3

ty again :)

and we know that $Amps=\frac{ volts }{ ohms }, 0.00233333333=\frac{ 150V }{ Ohms }$

remember ohms are the unit for resistance, normally noted with the sign$\Omega$

here we have to substitute for ohms, so we pass them to the left side multiplying, and then we pass the 0.00233333333 dividing the voltage

so we get $\Omega=\frac{ 150V }{ 0.00233333333Amp }$

36. DrPepperx3

got it ! :) so =64285.72

37. Jagking

yea.

38. Jagking

sorry they left u so soon.

39. DrPepperx3

um ok

40. Jagking

wow. nice pic.

perfect! :D

42. Jagking

wow dude. ur late.

.-. ok, whatever you say

I'm actually trying to help people here instead of flirting you know?

45. Jagking

i'm helping finish the work u left unfinished. plus i could get her before u do anyway.

I don't care about that, I have a girlfriend, plus just hopping in and saying "yes" is not exactly helping much

47. Jagking

i know. but i also know not 2 leave a girl hanging.