Question

Describe Ohm's law.
Class 10
5 marks.
Please don't spam/ 100 points....

Answer 1

Ohm's Law.

Good question,

Here is your perfect answer!

At constant temperature, the current flowing through a wire is directly proportional to voltage across the wire.

This is Ohm's law.

Let I be the current and V be constant voltage.

I is directly proportional to V;

=) I = V*k,

Where k is constant.

This constant is equal to reciprocal resistance of that combination,

=) I = V/R

=) V = I*R

This was given by Simon Ohm.

If you wanna make a graph of it, just plot V in x axis, I in y axis.

Then the slope is constant, straight line,

R = V/I.

Answer 2

$\huge \bf \red{ANSWER}$


OHM'S LAW

When the temperature and pressure remains constant then the current flowing in the conducter is directly proportional to the potential difference applied at the end of conducter.


i (current) is directly proportional to v(potential difference)

hence

V=IR

HERE R IS CONSTANT DETERMINING RESISTENCE.


proof


E=v/I...... (1)

I=neAvd

I=neA eE/m*t

I=ne^2A.E/m*t

I=ne^2Av/lm*T

I=ne^2A*T/lm*v

v/I=ml/ne^2*AT

here ml/ne^2*AT is constant

hence

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


proved

THANKS