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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
Name three factors on which resistance of a given wire depends and state how is it affected by the factors stated by you.
Draw a I–V graph for a linear resistor. What does its slope represent?
Assertion (A): Copper is used to make electric wires.
Reason (R): Copper has very low electrical resistance.
Resistance of a wire depends on, ______.
What is resistance?
______ is the only non-metal that is a good conductor of electricity.
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 ______.
Match the following:
| Column I | Column II | ||
| 1. | Resistor | a. | Galvanometer |
| 2. | Connecting wire | b. | Voltmeter |
| 3. | Current in an electric circuit | c. | Copper |
| 4. | Potential difference | d. | Constantan |
|
5 bulbs are connected in series in a room. One bulb is fused. It is removed and remaining 4 bulbs are again connected in series to the same circuit. What will be the effect on the following physical quantities? (Increases, Decreases, Remain Same). |
- Resistance
- Intensity of light
Two copper wires are of the same length, but one is thicker than the other. Which wire will have more specific resistance?
