Electric Math Problem

Electric Math Problem

PostBy: theo On: Tue Feb 24, 2009 9:23 pm

Hello All, Need alittle help on this math problem,,, What would the resistance of a vdr be when the voltage is at 0.5 kilovolts and the current is at 100 microamperes?
theo
 
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Re: Electric Math Problem

PostBy: coal-cooker On: Tue Feb 24, 2009 9:33 pm

5,000,000 ohms
coal-cooker
 
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Re: Electric Math Problem

PostBy: Cap On: Tue Feb 24, 2009 10:02 pm

50 million ohms.
I have this much money stashed under the matters. :P
Cap
 
Hand Fed Coal Boiler: Harman SF 250, domestic hot water loop, heat accumulator


Re: Electric Math Problem

PostBy: Poconoeagle On: Tue Feb 24, 2009 10:05 pm

I bet you would put up LOTS of resistance if we came to lift your matress!!!!
Poconoeagle
 
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Re: Electric Math Problem

PostBy: JB Sparks On: Tue Feb 24, 2009 10:16 pm

50,000 ohms
JB Sparks
 
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Re: Electric Math Problem

PostBy: Yanche On: Tue Feb 24, 2009 10:37 pm

The answer is 5.0 million ohms.

For the solution the engineer's way of thinking, using scientific notation.

R = V/I

R = 0.5*10^3 / 100*10^-6

which is the same as,

R = 5*10^2 / 1*10^-4

which is the same as,

R = 5/1 times 10^2/10^-4

which is the same as,

R = 5 times 10^6

or 5 million ohms

See how easy it was using scientific notation! :-)
Yanche
 
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Re: Electric Math Problem

PostBy: Cap On: Wed Feb 25, 2009 9:55 am

I missed the 100 in the micro amp. I calculated the formula using 1 microamp. da!

Darn, that means there is only 5,000,000 stuffed under the mattress. :lol:
Cap
 
Hand Fed Coal Boiler: Harman SF 250, domestic hot water loop, heat accumulator

Re: Electric Math Problem

PostBy: Dann757 On: Wed Feb 25, 2009 10:19 pm

Everyone is doing Theo's homework for him.
Dann757
 

Re: Electric Math Problem

PostBy: WNY On: Thu Feb 26, 2009 11:05 am

he need to find and use the equations.

Reference this, you should be able to figure anything out.

http://o.mneina.googlepages.com/Electronics_basics.htm
WNY
 
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