please give answer with sufficiant examples
2006-12-04 22:37:39 · 7 answers · asked by Anonymous in Consumer Electronics ➔ Home Theater
Voltage is written with V or Volts as the units. It represents the potential difference in a circuit. Current is measured in Amperes and normally represented with an I. Resistance is also important and is usually represented with the capital Greek letter Omega, the units are Ohms. They form the following relations:
V = IR, I = V/R and R = V/I. Also, Power is measured in Watts and is equal to (I^2)R or VI. You can think of the current as the movement of electrons in the circuit and voltage as the motivation that allows them to move (analogous to a hill and gravitational potential). When you ground a circuit you eliminate the voltage, thus preventing current from flowing. Hopefully that helps.
2006-12-04 22:44:51 · answer #1 · answered by DJL2 3 · 0⤊ 1⤋
VOLTAGE is the "pressure of electricity", and CURRENT is the flow-rate.
VOLTAGE is potential, like a head of steam, a static pressure of electricity waiting to flow.
CURRENT is measured in AMPS. If electrons are the atoms of electricity, you'd see six million million million of them flow per second for each amp of current there is. (electrons are very small - many household appliances have several amps as a working current.
you can turn this around and work out that a 100 watt bulb requires a current of 100 divided by 240 = 0.4 amps.
2006-12-05 06:57:26 · answer #2 · answered by SureshkumarYVS from hyderabad 3 · 0⤊ 0⤋
An analogy could be a dam. The voltage is the difference in water level between the water in the dam and water on the lake below the dam; while the current is the water that's flowing through the dam.
2006-12-05 06:52:33 · answer #3 · answered by sail191912 2 · 0⤊ 0⤋
Imagne there is a tankful of water at a certian height and that it has a pipe connected to it coming down.
Voltage is similar to the pressure of the water created due to the height of the tank in relation to ground level.
Current is similar to quantity of water that can flow through the pipe.
The higher the tank more the pressure.
Bigger the pipe higher the flow rate.
Similarly higher the EMF more the voltage
More the current higher the amps
2006-12-05 07:36:17 · answer #4 · answered by joe m 2 · 0⤊ 0⤋
It's[voltage] the way we measure the current
2006-12-05 06:44:43 · answer #5 · answered by Anonymous · 0⤊ 0⤋
voltage is potential we can say energy. to understand it is the pressure of electrons and current is rate of flow of electrons
2006-12-05 06:55:22 · answer #6 · answered by vijay k 1 · 0⤊ 0⤋
voltage is your FAT and current is your energy!
2006-12-05 06:42:21 · answer #7 · answered by FIXIT 4 · 0⤊ 0⤋