# Electric Math Problem

### Electric Math Problem

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

Stove/Furnace Make: LL
Stove/Furnace Model: Hyfire 2

### Re: Electric Math Problem

5,000,000 ohms
coal-cooker

Stove/Furnace Make: Crane/Harman
Stove/Furnace Model: Coal Cooker/Mark II

### Re: Electric Math Problem

50 million ohms.
I have this much money stashed under the matters.
Cap

Hand Fed Coal Boiler: Harman SF 250, domestic hot water loop, heat accumulator

### Re: Electric Math Problem

I bet you would put up LOTS of resistance if we came to lift your matress!!!!
Poconoeagle

Stove/Furnace Make: Buckwalter & Co. , EFM520
Stove/Furnace Model: No. 28 Glenwood 1880, Alaska

### Re: Electric Math Problem

50,000 ohms
JB Sparks

Stove/Furnace Make: Harman - Chubby
Stove/Furnace Model: Harman: SF160 - Chubby Sr.

### Re: Electric Math Problem

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

Stoker Coal Boiler: Alternate Heating Systems S-130
Coal Size/Type: Anthracite Pea

### Re: Electric Math Problem

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.
Cap

Hand Fed Coal Boiler: Harman SF 250, domestic hot water loop, heat accumulator

### Re: Electric Math Problem

Everyone is doing Theo's homework for him.
Dann757

### Re: Electric Math Problem

he need to find and use the equations.

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