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प्रश्न
Resistance of a wire depends on, ______.
विकल्प
temperature
geometry
nature of material
all the above
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उत्तर
all the above
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संबंधित प्रश्न
Assertion (A): Copper is used to make electric wires.
Reason (R): Copper has very low electrical 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.
What is the maximum resistance one can make with ten 1Ω resistors?
The resistance of a conductor is R. If Its length is doubled, then its new resistance will be ______.
______ is the only non-metal that is a good conductor of electricity.
Three resistors are connected in parallel with a battery. If the current in each resistor is 2A, then the current through the battery will be ______.
A rheostat is also known as fixed resistance.
Define the following:
Fixed resistor
|
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
