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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? - Science

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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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पाठ 1: Electricity - Exercise 3

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संबंधित प्रश्‍न

Let the resistance of an electrical component remains constant while the potential difference across the two ends of the component decreases to half of its former value. What change will occur in the current through it?


Write the SI unit of resistivity


 Name the law which is illustrated by the above VI graph.


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


What is the necessary condition for a conductor to obey Ohm’s law? 


A wire has a length of 2.0 m and a resistance of 5.0 Ω. Find the electric field existing inside the wire if it carries a current of 10 A.


A metal sphere is kept on an insulting stands. A negatively charged rod is brought near it, then the sphere is  earthed as shown. On removing the earthing, and taking the negatively charged rod away, what will be the  nature of charge on the sphere? Give reason for your answer. 


Consider the sacle of voltmeter shown in the diagram and answer the following questions : 

(a) What is the least count of the voltmeter?

(b) What is the reading shown by the voltmeter ?

(c) If the voltmeter is connected across a resistor of 20 `Omega` how much current is flowing through the resistor?


Write a short note on superconductors?


Which of the following is correct for V-I graph of a good conductor?


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A student carries out an experiment and plots the V-I graph of three samples of nichrome wire with resistances R1, R2 and R3 respectively. Which of the following is hue?


A student carries out an experiment and plots the V-I graph of three samples of nichrome wire with resistances R1, R2 and R3 respectively. Which of the following is true? 


Calculate the total resistance of the circuit and find the total current in the circuit.


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The resistance of a resistor is reduced to half of its initial value. If other parameters of the electrical circuit remain unaltered, the amount of heat produced in the resistor will become ______.


Why should an ammeter have low resistance?


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