Question

$\huge \bold \red{hello \: mates}$
50pts ____

State and verify Ohm's law.

No spam ✖️

No google answers ✖️

Get Ready for the next question ^_^​

Answer 1

$\huge \boxed{answer - }$

Ohm's law gives the relationship between current and potential difference.

According to this law - At constant temperature the current flowing through a conductor is directly proportional to potential difference and inversely proportional to its resistance.

$\huge \boxed{verification}$

At a constant temperature if I is the current flowing through a conductor and V is the potential difference across its ends, then according to Ohm's law,

V directly proportional to I

OR V =R*I

Where R (resistance) is a constant .

The value of this constant depends on the nature, length, area of cross section and temperature.

So,

$\frac{v}{i} = r$

Or V=I*R

Or

$\frac{v}{r} = i$

So current I =V/R

$\huge \boxed{verified}$

Answer 2

Statement of Ohm's Law:

Ohm’s law states that at a constant temperature, current 'I' through a conductor between two points is directly proportional to the potential difference or voltage 'V', across the two points. That is,

$v \ \alpha \: i$

or V/I = constant = R

or V = IR

Thus, the ratio V : I is a constant. This constant is called as the resistance (R) of the conductor.

Graph:

After performing experiment for different readings of V & I and recording the observations, if we plot current on the x-axis of a graph and voltage on the y-axis of the graph, we will get a straight-line. The gradient of the straight-line graph is related to the resistance (R) of the conductor.