1992 Dodge Shadow Resistance and Ohms Law

sunshine 03 · Posted at Thu Aug 20, 2009 7:04 pm

1992 Dodge Shadow

Hi Everyone
I was once told that a common training tool for exposing electricians to resistance; was a large bulb in series with a small bulb. I believe it was on a 12 volt system and the bottom line is; that no matter what - the small bulb was the only one that worked. And another example would be; 6 light bulbs (2 ohms apiece) in series on a 12 volt circuit - resulting in none of the bulbs illuminating properly. Is anyone aware of these exercises and the resistances used in proportion to volts and amps ?
I really appreciate your time and any ideas.
Thanks

rasmataz · Posted at Thu Aug 20, 2009 8:15 pm

Hmmmm.... Ohms law Its E over IXR

The more resistance in a circuit the less power and vice versus

E
_______
I X R

Ohm's Law defines the relationships between (P) power, (E) voltage, (I) current, and (R) resistance. One ohm is the resistance value through which one volt will maintain a current of one ampere.

( I ) Current is what flows on a wire or conductor like water flowing down a river. Current flows from negative to positive on the surface of a conductor. Current is measured in (A) amperes or amps.

( E ) Voltage is the difference in electrical potential between two points in a circuit. It's the push or pressure behind current flow through a circuit, and is measured in (V) volts.

( R ) Resistance determines how much current will flow through a component. Resistors are used to control voltage and current levels. A very high resistance allows a small amount of current to flow. A very low resistance allows a large amount of current to flow. Resistance is measured in ohms.

( P ) Power is the amount of current times the voltage level at a given point measured in wattage or watts.

caradiodoc · Posted at Mon Sep 07, 2009 12:54 am

E = I x R