Physics
State Ohm's law and draw a neat labelled circuit diagram containing a battery, a key, a voltmeter, an ammeter, a rheostat and an unknown resistance to verify it.
Answer
According to Ohm's law, the current flowing in a conductor is directly proportional to the potential difference applied across it's ends provided that the physical conditions and the temperature of the conductor remain constant.
If a current I flows in a conductor when the potential difference across it's ends is V and R is the resistance, then according to Ohm's law V = IR
Below circuit diagram shows the setup for verifying Ohm's law:
Related Questions
What is an ohmic resistor? Give one example of an ohmic resistor. Draw a graph to show it's current–voltage relationship. How is the resistance of the resistor determined from this graph?
What are non-ohmic resistors? Give one example and draw a graph to show it's current-voltage relationship.
(a) Draw a V-I graph for a conductor obeying Ohm's law.
(b) What does the slope of V-I graph for a conductor represent?
Draw an I-V graph for a linear resistor. What does it's slope represent?