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प्रश्न
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संबंधित प्रश्न
The substance having infinitely high electrical resistance is called:
(a) conductor
(b) resistor
(c) superconductor
(d) insulator
What is the equivalent resistance between A and B in the given circuit (Fig?)
Define the term resistivity and state its S.I. unit. Which will have higher resistivity a conductor or an insulator.
Calculate the equivalent resistance between the points A and B for the following combination of resistors:
Six resistances are connected together as shown in the figure. Calculate the equivalent resistance between points A and B.
Three resistors of 6Ω, 3Ω and 2Ω are connected together so that their total resistance is greater than 6Ω but less than 8Ω Draw a diagram to show this arrangement and calculate its total resistance.
Two lamps of resistance 30Ω and 20Ω respectively are connected in series in a 110V circuit. Calculate:
(i) the total resistance in the circuit
(ii) the current in the circuit, and
(iii) the voltage drop across each lamp.
Illustrate-combination of cells e.g., three cells, in series, explaining the combination briefly. Obtain an expression for current ‘i’ in the combination.
With the help of a circuit diagram derive the formula for the resultant resistance of three resistances connected:
- in series and
- in parallel
