Question

What is ohm's law
Please Tell me because my pre board is coming

Answer 1

This relationship states that: The potential difference (voltage) across an ideal conductor is proportional to the current through it. The constant of proportionality is called the "resistance", R. Ohm's Law is given by: V = I R where V is the potential difference between two points which include a resistance R.

Answer 2

$\textbf{Answer :}$



$\huge\textbf{Ohms law :}$

According to it electric current (I) is directly proportional to Voltage (V).

i.e.

$V$ $\alpha$ $I$

If we remove the sign of directly proportional then we have to use a constant i.s. R (Resistance).

i.e.

$V\:=I\:R$

or

$\frac{V}{I}\:=\:R$

or

$\frac{V}{R}\:=\:I$

The S.I. unit of Electric current (I) = Ampere.

The S.I. unit of Voltage (V) = Volts.

The S.I. unit of Resistance is (R) = Ohms.

If we make the V-I graph of Ohms law then it is a $\textbf{straight line.}$

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