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प्रश्न
The graph between V and I for a conductor is a straight line passing through the origin.
Which law is illustrated by such a graph?
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उत्तर
Ohm's law states that the graph between V and I for a conductor is a straight line passing through the origin.
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संबंधित प्रश्न
Graph showing the variation of current versus voltage for a material Ga As is shown in the figure. Identify the region of
(i) negative resistance
(ii) where Ohm's law is obeyed.
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 an Ohmic resistor?
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
Fill in the following blank with suitable words:
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Calculate the electric field in a copper wire of cross-sectional area 2.0 mm2 carrying a current of 1 A.
The resistivity of copper = 1.7 × 10–8 Ω m
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State the relation correlating the electric current flowing in a conductor and the voltage applied across it. Also, draw a graph to show this relationship.
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Calculate the total resistance of the circuit and find the total current in the circuit.
State Ohm's Law. Represent it mathematically.
