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Question
Two copper wires are of the same length, but one is thicker than the other. Which wire will have more specific resistance?
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Solution
We know that the specific resistance(ρ) does not depend on the length or thickness of the wire. It depends upon the material used. It will be the same in this case.
RELATED QUESTIONS
Two copper wires are of the same length, but one is thicker than the other. Which wire will have more resistance?
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 |
What happens to the resistance, as the conductor is made thicker?
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 ______.
A rheostat is also known as fixed resistance.
Define the following:
Fixed resistor
Define the following:
Variable 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
Define the term resistance.
