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प्रश्न
What is non ohmic device?
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उत्तर
Materials or devices that do not follow Ohm’s law are said to be non-ohmic.
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संबंधित प्रश्न
What is an Ohmic resistor?
Name the unit of electrical resistance and give its symbol.
Ohm's law gives a relationship between:
(a) current and resistance
(b) resistance and potential difference
(c) potential difference and electric charge
(d) current and potential difference
The resistors R1, R2, R3 and R4 in the figure given below are all equal in value.
What would you expect the voltmeter A, B and C to read assuming that the connecting wires in the circuit have negligible resistance?
A wire of resistance 3 ohm and length 10 cm is stretched to length 30 cm. Assuming that it has a uniform cross section, what will be its new resistance?
Define Current density.
Obtain the macroscopic form of Ohm’s law from its microscopic form and discuss its limitation.
State Ohm's Law. Represent it mathematically.
How is electric current related to the potential difference across the terminals of a conductor?
Draw a labelled circuit diagram to verify this relationship.
