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प्रश्न
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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.
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?
What is Resistivity?
Find the expression for the resistivity of a material and state the SI unit of resistivity.
Calculate the current flowing through a wire of resistance 5 Ω connected to a battery of potential difference 3 V.
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.
Rewrite the following statement by selecting the correct option.
The S.I. unit of resistance is __________.
Define temperature coefficient of resistance.
Explain the equivalent resistance of a parallel resistor network.
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.
