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प्रश्न
Define the term resistance.
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उत्तर
Resistance is the obstacle that the wire presents to the current flow.
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संबंधित प्रश्न
Two copper wires are of the same length, but one is thicker than the other. Which wire will have more resistance?
Exercise.
The values of current (I) flowing through a resistor for various potential differences V across the resistor are given below. What is the value of resistor?
| I (ampere) | 0.5 | 1.0 | 2.0 | 3.0 | 4.0 |
| V (volt) | 1.6 | 3.4 | 6.7 | 10.2 | 13.2 |
The effective resistance of three resistors connected in series is lesser than the lowest of the individual resistances.
The resistance of a straight conductor is independent of ______.
Two conductors of resistance 2 R and R are connected in series in a battery circuit. The ratio of heat developed In them is ______.
If the area of cross-section of the conductor is doubled its resistance gets ______.
Three resistors are connected in series with a cell. If the current in each resistor is 1.5A, then the current through the cell will be ______.
Define the following:
Variable resistor
Observe the given circuit diagram and answer the questions that follow:
- Calculate the resistance of the circuit when the key K completes the circuit.
- Calculate the current through 3Ω resistance when the circuit is complete.
Two copper wires are of the same length, but one is thicker than the other. Which wire will have more specific resistance?
