Advertisements
Advertisements
Question
State the order of resistivity of (i) a metal, (ii) a semiconductor and (iii) an insulator.
Solution
Metal < Semiconductor < Insulator
APPEARS IN
RELATED QUESTIONS
Why is the series arrangement not used for domestic circuits?
Write any two characteristics of a series combination of resistors.
How does the resistance of a pure metal change if its temperature decreases?
A p.d. of 4 V is applied to two resistors of 6 Ω and 2 Ω connected in series. Calculate:
(a) the combined resistance
(b) the current flowing
(c) the p.d. across the 6 Ω resistor
State how are the two resistors joined with a battery when equivalent resistance is more than either of the two resistances.
In series combination of resistances ______.
Choose the correct alternative and rewrite the following sentence.
If three resistors 2 ohms, 3 ohms and 4 ohms are connected in series, then the effective resistance in the circuit will be _______ ohms.
Bends in a rubber pipe reduce the flow of water through it. How would the bands in a wire affect its electric resistance?
Two resistors of 4Ω and 6Ω are connected in parallel to a cell to draw 0.5 A current from the cell.
Draw a labelled circuit diagram showing the above arrangement.
The resistance of the hot filament of the bulb is about 10 times the cold resistance. What will be the resistance of 100 W-220 V lamps, when not in use?
