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प्रश्न
What is an ohmic resistor? Give one example of an ohmic resistor. Draw a graph to show its current voltage relationship. How is the resistance of the resistor determined from this graph?
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उत्तर
An ohmic resistor is a resistor that obeys Ohm's law.
For example: all metallic conductors (such as silver, aluminium, copper, iron etc.)
From above graph, resistance is determined in the form of a slope.
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संबंधित प्रश्न
Is Ohm’s law universally applicable for all conducting elements? If not, give examples of elements which do not obey Ohm’s law.
What is Resistivity?
Which of the following is an ohmic resistance?
A wire of resistance 9 ohm having length 30 cm is tripled on itself. What is its new resistance?
How does an increase in the temperature affect the specific resistance of a :
(i) Metal and
(ii) Semiconductor ?
Rewrite the following statement by selecting the correct option.
The S.I. unit of resistance is __________.
Obtain the macroscopic form of Ohm’s law from its microscopic form and discuss its limitation.
Which of the following I-V graph represents ohmic conductors?
The variable resistance is called ____________.
