What is the formula of ohmslaw?

Answer 1

Ohm's Law states that, for a passive element, V (the voltage drop) is proportional to I (the current in the component), and the proportional constant is R (the resistance). Namely, V = R * I.

For DC operations in a passive element, Ohm's Law is dealing with scalar quantities. For AC, V and I become vectors (phasors) for Ohm's Law to be valid.

A passive element is an electrical component that does not have gain, voltage gain or current gain. Examples are resistors, capacitors, inductors, diodes, and Transformers.

An active element is one that has gain. Examples are transistors (MOSFET, bipolar, and JFET). A solar cell is an active element. Although Ohm's Law does not apply to transistors, the Law still can apply to the passive components of transistors, if we represent the transistor with passive elements and active elements.

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Answer 2

V/i=r

Answer

There is NO 'Ohm's Law formula'! Ohm's Law is simply a statement of the relationship between voltage and current in somematerials. What is mistakenly called the 'Ohm's Law formula' is actually derived from the definition of an ohm.

Answer 3

E=IR E=Voltage =(I) Current x Resistance(R)

E Voltage applied to the circuit, in volts (V)

I Current flowing in the circuit, in amperes (A)

R Resistance in the circuit, in ohms

V=IR CALLED OHM'S LAW

Answer 4

Ohm's law. E=IR, voltage (E) = amperage (I) times resistance (R), I=E/R, R=E/I

There is no 'formula' for Ohm's Law! The formula that you are looking for is R = E/I, which is derived from the definition of the ohm, not from Ohm's Law.

Ohm's Law describes a linear relationship between the potential difference across a conductor and the current through that conductor. Ohm's Law does NOT describe the relationship between potential difference, current, and resistance!

Answer 5

A formula for ohms law would be V over I times R.

Voltage is V, R is for resistance (which is measured in ohms), and I equals amperage. So if you had a voltage of 220 volts and 4 amps of power are being used, you would divide 220 by 4 to get a resistance of 55 Ohms. Just draw a circle with V on the top, then an I next to an R on the bottom. Then with your finger cover the missing variable and solve. Hope this helps. :)

ANOTHER ANSWER

There is NO Ohm's Law 'formula'!

Ohm's Law is a law of constant proportionality. It ONLY applies to those conductors and other components whose ratio of voltage to current remains constant for variations in voltage. It does not apply to conductors or components whose ratio of voltage to current changes for variations in voltage. So Ohm's Law is not a universal law.

Conductors and other devices which obey Ohm's Law are termed 'linear' or 'ohmic'; those that do not (the majority, in fact!) are termed 'non-linear' or 'non-ohmic'. Some, but not all metals, are linear (e.g. tungsten is not) and most electronic components such as diodes, electrolytes, and gases are non-linear.

The ratio of voltage to current is, of course, resistance. And we can use this ratio to determine what the resistance of a device happens to be for that particular ratio, at any given voltage, even for devices that do not obey Ohm's Law. For non-linear devices, the ratio continuously changes for variations in voltage.

So, it's questionably whether Ohm's Law should be 'law' at all, and one might wonder why we even bother to teach it!

It is quite incorrect to define Ohm's Law as, "resistance equals voltage divided by current", as this equation is derived from the definition of the ohm, and NOT from Ohm's Law -which makes absolutely no reference to resistance.

Answer 6

The formula is:

V = I x R (Voltage = Current x Resistance).

Answer 7

Ohm's Law states that Voltage = Current x Resistance.

Answer 8

V=IR

where V-voltage in the circuit

I-current passing through the circuit

R-resistance of the circuit

Answer 9

formula of ohmslaw

Answer 10

V=ir