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प्रश्न
The substance having infinitely high electrical resistance is called:
(a) conductor
(b) resistor
(c) superconductor
(d) insulator
उत्तर
(d) insulator
A substance having infinitely high electrical resistance is called an insulator.
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संबंधित प्रश्न
Complete the following :-
(a)
Name the material which is the best conductor of electricity.
Give one example to show how the resistance depends on the nature of material of the conductor.
State how are the two resistors joined with a battery when equivalent resistance is more than either of the two resistances.
Write an expression for the resistance of a conducting wire in terms of its length and area of cross-section.
State expression for Resistance connected in series.
Write an expression for calculating electrical power in terms of current and resistance.
Six equal resistors of 1 ohm each are connected to form the sides of a hexagon ABCDEF. Calculate the resistance offered by the combination if the current enters at A and leaves it at D.
Two wires of same material and same lengths have radii in the ratio of 2 : 3, Compare their resistances.
