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प्रश्न
Name the law which is illustrated by the above V−I graph.
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उत्तर
Ohm's law is illustrated by the above V−I graph.
संबंधित प्रश्न
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.
Write the formula of resistivity
Write the SI unit of resistivity
Name the physical quantity whose unit is "ohm".
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Fig. represents the circuit used for the verification of ohm's law. Label the different parts from A and F. State the function of each.
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Answer the following question.
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State Ohm's Law. Represent it mathematically.
You are provided with a resistor, a key, an ammeter, a voltmeter, four cells of 1.5 V each and few connecting wires. Using circuit components, draw a labelled circuit diagram to show the setup to study Ohm's law.
State the relationship between potential difference (V) across the resistor and the current (I) flowing through it. Also draw V-I graph, taking V on the X-axis.
A current of 0.8 A flows in a conductor of 40 Ω for 1 minute. The heat produced in the conductor will be ______.
The circuit depicted in the figure is employed for studying Ohm’s Law. Instead of using a standard resistor, a student opts for a glass tube filled with mercury (tube 1), connected to the circuit through two electrodes, E1 and E2. He records the readings of the ammeter and voltmeter, thereby calculating the resistance. The student repeats the experiment by substituting tube 1 with tube 2, where the same amount of mercury fills tube 2.
Neglecting internal resistance of the cell use (> or < or =) to compare:
- the resistance in both the cases.
- the voltmeter readings in both the cases.
- the specific resistance in both the cases.
The electric current between two joined conductors at different potentials continues to flow until:
What is the nature of the graph obtained when potential difference is plotted against current for an Ohmic conductor?
