I just measured a lime battery for my project and was wondering what resistance ment in the world or electricity.
2007-02-24 06:38:34 · 8 answers · asked by chibi-chan 2 in Science & Mathematics ➔ Physics
volts divided by amps=resistance in Ohms.
resistance is equivallent to the friction increasing and decreasing as electricity flows through a circuit. As such it generates heat, for example in light bulb fillaments or old bar style electric heaters.
2007-02-24 06:49:10 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Think of getting off a crowded bus.
The entire busload of passengers cannot get off as soon as the doors open. Why not?
It's because it's hard for everyone to push their way off the bus when the aisle is narrow.
Your torch batteries do not empty all the charge out of themselves as soon as you turn it on. Why not?
It's because it's hard to push a lot of electricity down a wire if it is thin.
Resistance means the same thing in any context, it is what you're pushing against.
If a wire (or bulb, or any electrical component) has high resistance, it means it is hard to make a lot of electricity flow through it in a short time.
If something has low resistance, it means electricity can flow through it easily.
An Ohm is just a unit of measure of resistance, a lot of ohms means high resistance, a small number of Ohms means low resistance.
The resistance of the piece of wire connecting your battery to your radio will be low, maybe less than one Ohm, so that electricity flows easily from the battery to the radio. But the resistance of the electronic circuit in the radio will be many thousands of Ohms, so it takes quite some time before all the stored electricity in the battery has been used by passing it through your radio.
2007-02-24 18:36:40 · answer #2 · answered by Valmiki 4 · 0⤊ 0⤋
Resistance in electricity means the obstacle that electric current encounters in running along a conductor.
OHM is the unit of measurement of resistance like a foot is a measure of lenght.
2007-02-24 14:44:25 · answer #3 · answered by giorgio s 4 · 0⤊ 0⤋
Ohms is a measure of resistance. A resistor is used to control the flow of electricity, called current. Too much current can damage many electrical and electronic devices. To prevent this, a resistor is used in order to prevent too much current from flowing into the device.
2007-02-24 14:48:33 · answer #4 · answered by DuckyWucky 3 · 0⤊ 1⤋
voltage = current * resistance or V=IR where v=voltage, I = current, and R = resistance
V is in volts, I is in amps, and R is in Ohms.
So, if you apply 10 volts to a resistor and 1 amp flows through the resistor, then the resistance would be 10 Ohms.
So, ohms are a way to compare different materials as to how much current will flow through them at the same voltage. More ohms = more resistance = less current.
2007-02-24 14:47:15 · answer #5 · answered by bkc99xx 6 · 0⤊ 1⤋
OHMS is the resistance to the flow of current.
2007-02-24 16:10:33 · answer #6 · answered by JOHNNIE B 7 · 0⤊ 0⤋
1 Ohm is the resistance, which if one Volt is applied to it, will allow 1 Ampere of current to flow. At that rate 1 Watt of power will be dissipated.
2007-02-24 14:49:25 · answer #7 · answered by Anonymous · 0⤊ 1⤋
isnt that some law in physics
2007-02-24 15:01:29 · answer #8 · answered by Anonymous · 0⤊ 1⤋