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Physics 70 Online
OpenStudy (anonymous):

What will the resistance be for a lamp that draws 4.6 amps of current from a 120-volt outlet? A. 550 ohms B. 115 ohms C. 26 ohms D. 0.038 ohms E. 5.7 ohms

OpenStudy (anonymous):

someone said this is insufficent is this true?

OpenStudy (souvik):

R=V/I

OpenStudy (anonymous):

ok lol

OpenStudy (anonymous):

c :)

OpenStudy (souvik):

hmm

OpenStudy (anonymous):

26.0870 u dont round that?

OpenStudy (anonymous):

or no because it 0870 and not 870

OpenStudy (souvik):

26

OpenStudy (anonymous):

ok lol

OpenStudy (anonymous):

just making sure

OpenStudy (anonymous):

A guitar amplifier requires a household voltage of 110 volts to push a current of 5.9 amps through its coil. What is the resistance of the amplifier?

OpenStudy (anonymous):

I do the exact same thing correct?

OpenStudy (souvik):

yes...same

OpenStudy (anonymous):

0.0536

OpenStudy (anonymous):

0.054 :)

OpenStudy (anonymous):

If the current and the resistance in a circuit both double, what will happen to the voltage?

OpenStudy (anonymous):

stays the same right

OpenStudy (souvik):

V=IR ...calculate it

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

its the same

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