2007-02-20 06:26:30 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Physics
In layman's terms, it fights current flow through it, using up some the the energy in the flow. The lost voltage across the resistor doesn't disappear, of course, the resistance of the material in the resistor transforms it into heat. So a resistor is used to drop voltages and help control amount of current flow. If you have a 12 volt source and a 9 volt lamp, you have to 'use up' 3 volts or else the lamp will 'blow' pretty quickly. A resistor in series (of an appropriate value) will drop that 3 volts for you.
2007-02-20 06:33:39 · answer #1 · answered by waynebudd 6 · 1⤊ 0⤋
A resistor is a two-terminal electrical or electronic component that resists an electric current by producing a voltage drop between its terminals in accordance with Ohm's law. : The electrical resistance is equal to the voltage drop across the resistor divided by the current through the resistor. Resistors are used as part of electrical networks and electronic circuits.
2007-02-20 06:33:30 · answer #2 · answered by b c 3 · 0⤊ 0⤋
It does just as it's name implies. It resists the current flow in the circuit to the rate that the resister is rated for. Think of a fuse . If you try to get 25 amps out of a line that's rated for 15 amps you'll blow the fuse. Resistance is measured in ohm s so that a 5 ohm resister will resist the current by 5 ohms.
2007-02-20 06:52:18 · answer #3 · answered by reinformer 6 · 0⤊ 0⤋
It reduces the flow of current in a circuit
Current = Voltage/Resistance.
Current is measured in amperes, voltage in volts, and resistance in Ohms.
2007-02-20 06:34:13 · answer #4 · answered by ironduke8159 7 · 0⤊ 0⤋
Becomes a member of the Democrat party and resists to align themselves with others who love this country.
2007-02-20 06:34:53 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Impedes the flow of the electric current.
2007-02-20 06:31:04 · answer #6 · answered by Louie 5 · 0⤊ 0⤋
resists, it has to do with electric currents. It is hard to discribe, check out website.
http://www.satcure-focus.com/tutor/page2.htm
2007-02-20 06:28:43 · answer #7 · answered by Shmesh 3 · 0⤊ 0⤋