9 posts • Page **1** of **1**

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

5,000,000 ohms

- coal-cooker
**Stove/Furnace Make:**Crane/Harman**Stove/Furnace Model:**Coal Cooker/Mark II

50 million ohms.

I have this much money stashed under the matters.

I have this much money stashed under the matters.

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

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

50,000 ohms

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

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!

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

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.

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

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

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

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

- WNY
**Hot Air Coal Stoker Stove:**Keystoker 90K, Leisure Line Hyfire I**Coal Size/Type:**Rice**Stove/Furnace Make:**Keystoker, LL & CoalTrol**Stove/Furnace Model:**90K, Hyfire I, VF3000 Soon

9 posts • Page **1** of **1**

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