Advertisements
Advertisements
Question
What are ohmic conductors? Give one exmaple. Draw a graph showing the current-voltage relationship for an ohmic conductor.
Solution
The conductors which obey Ohm’s law (i.e., V/I is constant) are called ohmic conductors.
Example: Silver.
A graph showing the current-voltage relationship for a ohmic conductor is shown in the figure.
APPEARS IN
RELATED QUESTIONS
What will be the change in the current if the potential difference is kept constant and the resistance of the circuit is made four times?
- It will remain unchanged.
- It will become four times.
- It will become one-fourth.
- It will become half.
When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the resistor.
Name the unit of electrical resistance and give its symbol.
How should the two resistances of 2 ohms each be connected so as to produce an equivalent resistance of 1 ohm?
In the circuit shown in the figure, find the total resistance of the circuit and the current in the arm AD.
Choose the correct alternative.
Which of the following is an ohmic conductor?
SI unit of resistance is:
Define temperature coefficient of resistance.
A metal rod of length 10 cm and a rectangular cross-section of 1 cm × `1/2` cm is connected to a battery across opposite faces. The resistance will be ______.
How is electric current related to the potential difference across the terminals of a conductor?
Draw a labelled circuit diagram to verify this relationship.
