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प्रश्न
Fig. represents the circuit used for the verification of Ohm's law. Label the parts from A to F. state the function of each.
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उत्तर
Functions:
(A) Cell- It provides the potential difference in the circuit.
(B) Key- It serves as a switch in the circuit. It supplies or cuts off current as required.
(C) Ammeter- It measures the current in the circuit.
(D) Rheostat- It helps to change the resistance of the circuit without changing its voltage.
(E) Resistor- It provides a constant resistance in the circuit.
(F) Voltmeter- It measure the potential drop across the resistor.
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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.
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?
What is meant by the drift speed of free electrons?
What are ohmic conductors? Give one exmaple. Draw a graph showing the current-voltage relationship for an ohmic conductor.
SI unit of resistance is:
What is ohmic device?
Which of the following is correct for V-I graph of a good conductor?
State Ohm’s law? How can it be verified experimentally? Does it hold good under all conditions? Comment.
Ohm's law deals with the relationship between ______
