Answers

2014-09-23T19:51:56+05:30
Ohm's Law
The potential difference between the ends of a conductor is directly proportional to the electric current passing through it at constant temperature.
V
αI
V/I=Constant
V/I=R(R=resistance)
SI Unit of R is ohm
Functions
Ohm's law is valid for metal conductors provided the temperature and other physical conditions remain constant.

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2014-09-23T19:51:57+05:30
According to ohm's law, physical conditions like temperature remaining constant and the current passing through a conductor experiences a force. where current is directly proportional to the voltage(potential difference) across the two ends.
V=IR.
In this V is voltage, I is current and R is resistance.Here R is constant.
It is used for calculating current through the conductor like D.C and AC current. Tells about the resistance in the circuit and voltage across the circuit.


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