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please show working out

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- Thread starter hgo0
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- #1

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please show working out

- #2

tiny-tim

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Hi hgo0! Welcome to PF!

Show us what you've tried, and where you're stuck, and then we'll know how to help!

- #3

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0.25A x 12V = 3W

i dont know how to get the resistance or if im doing this right :uhh:

i dont know how to get the resistance or if im doing this right :uhh:

- #4

tiny-tim

Science Advisor

Homework Helper

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0.25A x 12V = 3W

Hi hgo0!

That's right: amps times volts = watts (or current times voltage = power).

i dont know how to get the resistance or if im doing this right :uhh:

Have you done Ohm's Law (or Kirchhoff's rules ) ? If not, look them up.

V = IR (or potential difference = voltage = current times resistance).

- #5

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kk thanks alot i'm new to physics (first year) and failing soo i need all the help i can get

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