Q.

Can u give me the definition of resistance from ohm's law?

Asked by Sneha Biswas,
20 Jul '09 10:54 pm

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Answers (7)

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V (Potentia diff.) is proportional to I (Current flow)

hence V = R(is a constant) * I

R is called as Resistance = V / I

Means R = potential diff per unit flow of current.

Answered by Satyakam Nayak, 20 Jul '09 11:00 pm
hence V = R(is a constant) * I

R is called as Resistance = V / I

Means R = potential diff per unit flow of current.

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4.

V=IR by Ohm's Law, where V is Potential difference and I is current and R is the resistance.

So Resistance = V/I, Resistance is a barrier to the current is stop the current upto its specific values.

Answered by Mohammad Qamar Abbas Rizvi, 04 Nov '09 12:24 pm
So Resistance = V/I, Resistance is a barrier to the current is stop the current upto its specific values.

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5.

At a given temperature, the current through any material is directly proportional to the potential difference at the ends. The ratio of this potential difference and the current is called the electrical resistance of the material (according to ohm's law). This definition is true only for linear devices.

Answered by Rajkumar Chand, 21 Jul '09 10:46 am
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7.

The electrical resistance of an object is a measure of its opposition to the passage of a steady electric current. An object of uniform cross section will have a resistance proportional to its length and inversely proportional to its cross-sectional area, and proportional to the resistivity of the material.

The resistance of a resistive object determines the amount of current through the object for a given potential difference across the object, in accordance with Ohm's law:

I = {V over R}

where

R is the resistance of the object, measured in ohms, equivalent to Js/C2

V is the potential difference across the object, measured in volts

I is the current through the object, measured in amperes

Answered by pramod rajapurkar, 20 Jul '09 11:04 pm
The resistance of a resistive object determines the amount of current through the object for a given potential difference across the object, in accordance with Ohm's law:

I = {V over R}

where

R is the resistance of the object, measured in ohms, equivalent to Js/C2

V is the potential difference across the object, measured in volts

I is the current through the object, measured in amperes

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