Advertisements
Advertisements
प्रश्न
Assertion (A): Copper is used to make electric wires.
Reason (R): Copper has very low electrical resistance.
पर्याय
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is NOT the correct explanation of A.
A is true but R is false.
A is false but R is true.
Both A and R are false
उत्तर
Both A and R are true and R is the correct explanation of A.
APPEARS IN
संबंधित प्रश्न
Draw a I–V graph for a linear resistor. What does its slope represent?
Two wires of the same material and same length have radii 1 mm and 2 mm respectively. Compare their resistances.
Two conductors of resistance 2 R and R are connected in series in a battery circuit. The ratio of heat developed In them is ______.
The resistance of a conductor is R. If Its length is doubled, then its new resistance will be ______.
Resistors are connected in series if the resistance of the electric circuit is to be ______.
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 ______.
The ______ is the measure of opposition offered by the component to the flow of electric current through it.
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