Advertisements
Advertisements
प्रश्न
Define the term resistance.
Advertisements
उत्तर
Resistance is the obstacle that the wire presents to the current flow.
APPEARS IN
संबंधित प्रश्न
How does the resistance of a wire depend on its radius? Explain your answer.
Name three factors on which resistance of a given wire depends and state how is it affected by the factors stated by you.
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.
______ 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 ______.
The ______ is the measure of opposition offered by the component to the flow of electric current through it.
A rheostat is also known as fixed resistance.
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
