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प्रश्न
What is the equivalent resistance between A and B in the given circuit (Fig?)
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उत्तर
Between A and B, the series combination of two resistors of resistances 2 ohm each is connected in parallel with the 1 ohm resistor.
:. Equivalent series resistance between A and B, R, = 2+2 = 4 Ω
Now, between A and B this 4 Ω resistor is connected in parallel with 1Ω resistor.
Equivalent resistance between A and B, R = `(1/4 + 1/1)^-1= (5/4)^-1 = 4/5`Ω
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संबंधित प्रश्न
Complete the following :-
(a)
Why is the series arrangement not used for domestic circuits?
Give one example to show how the resistance depends on the nature of material of the conductor.
Give the law of combination of resistances in series.
What possible values of resultant resistance one can get by combining two resistances, one of value 2 ohm and the other 6 ohm?
Name the material of wire used for making standard resistances. Give a reason.
Illustrate-combination of cells e.g., three cells, in parallel, explaining the combination briefly. Obtain an expression for current ‘i’ in the combination.
Two wires of the same length and area made of two materials of resistivity ρ1 and ρ2 are connected in series to a source of potential V. The equivalent resistivity for the same area is:
