What are volts, amps and Ohms

Question

can someone please help me with a hald page science introduction on what volts, amps and ohms are and how they are involved/interrelated with respect to electricity. help would be apprecited :[]

Answer 1

hav a look--

http://en.wikipedia.org/wiki/Volts

http://en.wikipedia.org/wiki/Ampere

http://en.wikipedia.org/wiki/Ohm%27s_Law

Answer 2

Volt is the unit of electromotive force, the volt measures how much “pressure” there is in an electrical circuit. The higher the voltage, the more electrical current will flow in the circuit.Ordinary household outlets are usually rated at 115 volts, car batteries at 12 volts, and flashlight batteries at 1.5 volts.

Amp is an unit of electric current. One ampere corresponds to a certain number of electron s passing a fixed point each second.

Ohms is an unit of electrical resistance equal to that of a conductor in which a current of one ampere is produced by a potential of one volt across its terminals.

Answer 3

It is all the units of electricity. Compare the flow of water..

1. Volt  It is the amount of force .If it is higher it can travel to a long distance.It is like force in the water pipes.We in India the domestic supply is 230 volts A.C. In U.S.A and Canada they maintain 110 volt. This is less danger than ours.But maintaining 110 volts needs more tranmission expence.

2. Amps is the rate of flow of current.It is like you get water from small pipe or from larger pipe.

3. Ohms is the resistance offered for its flow.If the pipe inner side is smooth it will not offer resistance to flow. If it has rough surface or small in dia the water flow will be restricted. The ohms is the resistance offered while passing the electricity.Different meterial will have different resistance to the flow of electricity.. The gold,platinum silver all will have lessor resistance to the flow of electricity where as the steels are having more resistance to the flow of electricity. The resistance to the flow if electricity is measured in ohms. It all inter connected units.

Answer 4

Electricity can be understood more intuitively with an analogy to water flowing in a pipe.

Voltage (measured in volts) is the force which pushes the electrons around.  It is created by batteries and generators.  The analogous quantity in water pipes is pressure, which is responsible for making the water move.

Current (measured in amps) is how much electricity is flowing (how many electrons per second are flowing past one point in a circuit).  The analogous quantity in water pipes is volume flow rate, such as how many liters of water flow through a pipe each second.

Resistance (measured in ohms) describes how 'difficult' it is to push the electricity through the circuit.  The analogous quantity in water pipes is viscous friction.  Imagine trying to push 1 gallon of water through a coffee straw in 1 second.  It would be very difficult, because the narrow straw has too much friction, and the water too much viscosity.  However, if the pipe were larger, say 2 inches in diameter, it would be easy to push 1 gallon through in 1 second.

The three quantities (voltage, current, and resistance) are related (for simple circuits) by this equation

V = I*R

where V is voltage, I is current, and R is resistance.

Answer 5

Volts are how likely electricity is going to strike any surface, amps is how powerful the strike is and Ohms is how much power is lost from the electricity as it travels a realitive distance.