Explain how Ohm's law describes the relationship among voltage, current, and resistasnce.?

Answer 1

To all the people on here, voltage isn't a V!!! It is E!!!! At least you got the current-i and resistance-R correct! Let us not mislead the people on here like the rest of the world is already doing.

Answer 2

Ohm's law states that, in an electrical circuit, the current passing through a conductor, from one terminal point on the conductor to another terminal point on the conductor, is directly proportional to the potential difference (i.e. voltage drop or voltage) across the two terminal points and inversely proportional to the resistance of the conductor between the two terminal points.

For real devices (resistors, in particular), this law is usually valid over a large range of values of current and voltage, but exceeding certain limitations may result in losing simple direct proportionality (e.g. temperature effects, see below).


A voltage source, V, drives an electric current, I , through resistor, R, the three quantities obeying Ohm's law: V = IR.In mathematical terms, this is written as:

V=I/R

where I is the current, V is the potential difference, and R is a constant called the resistance. The potential difference is also known as the voltage drop, and is sometimes denoted by E or U instead of V.

Answer 3

The current flowing in a circuit is directly proportional to the potential difference (voltage) between its ends the constant of proportionality being the conductance (resistance) of the component. So I=V/R where v is the voltage, I is the current and R is the resiststance. This of course only applies to direct currents

Answer 4

V=I/r

Voltage is directly proportional to current and inversely proportional to resistance.

Here is the analogy

Say you have a Water, and Pipe.

Assume Water is the electric flowing tought the wire
Pipe is the Resistance
Rate of the water flow is the current
The amount of the water is the voltage

So if you have a bigger pipe that means water will flow easily and you will get more water in short time (voltage)
If you make the pipe more tight (increase the resistance) and you will have less water (voltage)

So when the rate is high (current) you get more water (voltage)
When the pipe is to narrow (more resistance) you get less water (voltage)

Answer 5

E=IR or voltage is equal to currect times resistance. It can also be written as R=E/I or I=E/R

I=E/R is the equation as Ohm's Law is stated

The law states currect is dirrectly proportional to voltage and indirectly proportional to resistance.

Voltage is not V when dealing with electricity. It is E

Answer 6

The easiest way to remember Ohm's Law is the two circles.
Draw a circle, split it in half with a horizontal line. split the bottom half with a vertical line. Above the horizontal line write the letter "E" . In each of the bottom parts write the letters "I" on one side and "R" on the other. Draw another circle the same way and place a "P" in the top and "I" and "E" in the bottom. You can now solve problems for "E" =volts, "I"= amps, "R"=ohms, "P"=watts.

In the first circle place your finger over "E" this leaves I*R.
Place a finger over "I" and you have "E"/"R" cover "R" and you get E/I. Same thing with P-I-E circle.

Answer 7

ohm's law is v= i x r

where v is voltage , i is current and r is resistance.

so according to this law, voltage is dierectly proprtional to current and resistance. it means that if you double the amount of current voltage will also become double and same with increase in resistance.

i = v / r. so current is directly proprtional to voltage but indirectly to resistance.for an increase in voltage, current will increase but will decrease for increase in resistance.

r= v / i. resistance is directly proportional to voltage and indirectly to current.

Answer 8

current (I)= voltage(V) / resistance(R)

They're both proportional

Answer 9

v=i/r