2006-12-18 13:34:11 · 12 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
1 ohm is a unit of resistance to the flow of electricity.
Ohms Law: Voltage(E) = Current(I) x Resistance(R)
1 Ohm of resistance will drop 1 Volt across it when 1 ampere of current is flowing through it
2006-12-18 15:41:53 · answer #1 · answered by MarkG 7 · 0⤊ 0⤋
Its the measurement of electrical resistance. Voltage applied across a resistance gives a current. Volts / Amps = Ohms. This is called Ohm's Law and is a fundamental of learning electronics.
2006-12-18 13:37:13 · answer #2 · answered by Bret Z 2 · 0⤊ 0⤋
An ohm is a unit used to mesure the resistance in a circuit. The symbol for ohms kind of looks like an upsidedown U with feet. If you have a resistor you can use a multimeter to take a reading and see how many ohms it is.
2006-12-18 13:37:43 · answer #3 · answered by Jeal 2 · 1⤊ 1⤋
1 ohm is equal to 1 volt / ampere.
Meaning that if you have a certain electrival pressure that causes a certain current to flow, at 1 volt if you get 1 amp, then the resistance is 1 ohm.
Think about it this way. Think of gravity as the pressure. If you drop something in a vacuum that is like no resistance. If you drop it in the air, it moves slower, and if you dropped in under water it moves slower still.
Resistance is like the air or the water, it regulates the flow of electrical current. If the resistance is very low, lots of current will flow, like a short circuit. If the resistance is infinite, no current will flow, it is like an open circuit.
2006-12-18 14:47:53 · answer #4 · answered by themountainviewguy 4 · 0⤊ 0⤋
An ohm is a unit of measure of resistance.
Resistance in a circuit is figured by dividing voltage by current:
voltage/current = Resistance (in ohms)
2006-12-18 13:42:31 · answer #5 · answered by brightpool 3 · 1⤊ 1⤋
An ohm is a measure of electrical resistance.
2006-12-18 13:38:20 · answer #6 · answered by lenshure 2 · 1⤊ 1⤋
Georg Ohm was born in Erlangen, Germany. He was a physicist whose work on electrical currents resulted in the discovery of a mathematical law of electric current flow that is called Ohm's Law. The ohm is a unit of electrical resistance and it was named for him. It is equal to that of a conductor in which a current of one ampere is produced by a potenital of one volt across its terminals. For the latter part of his life, Ohm was a professor of experimental physics at the University of Munich. One of Erlangen's most famous sons was Georg Simon
Ohm (1789-1854), known to students of physics all
over the world as the discoverer of the law governing
the relationships between voltage, resistance and
electrical current.
Born in Erlangen, the mathematician and physicist
became a Professor at Munich University in 1845.
Georg Ohm is commemorated in Erlangen with a technical
Gymnasium (UK equivalent - grammar school) and a
square just outside the centre of the city, both of
which bear his name.
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.
2006-12-18 13:37:10 · answer #7 · answered by The CEO of Yahoo Answers! © 4 · 1⤊ 2⤋
It's a mesurment of resistance in an electric circuit.
2006-12-18 13:36:47 · answer #8 · answered by Anonymous · 1⤊ 1⤋
it is a measurement of resistance in an electrical circuit
(unfortunetly when it comes to resistors ampage is not affected by it)
2006-12-18 14:40:29 · answer #9 · answered by macgyver 1 · 0⤊ 1⤋
If I remember my high school physics, it is the resistance of a conductor or capacitor, etc.
2006-12-18 13:42:01 · answer #10 · answered by Clown Knows 7 · 0⤊ 1⤋