Advertisements
Advertisements
प्रश्न
What is the equivalent resistance between A and B in the given circuit (Fig?)
Advertisements
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
APPEARS IN
संबंधित प्रश्न
Why is the series arrangement not used for domestic circuits?
How does the resistance of a wire change when:
its diameter is tripled?
V = IRTwo resistances X and Y are connected turn by turn : (i) in parallel, and (ii) series. In which case the resultant resistance will be less than either of the individual resistances?R = R1+ R2+ R3
State how are the two resistors joined with a battery when same current flows in each resistor.
A graph is plotted taking p.d. along y-axis and electric current along x-axis. Name the physical quantity that represents the slope of this graph (Fig.).
You have three resistors of values 2 `Omega`, 3 `Omega`, and 5 `Omega`. How will you join them so that the total resistance is less than 2 `Omega`?
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.
A given metallic wire of resistance R is doubled on itself. What will be its new resistance?
Bends in a rubber pipe reduce the flow of water through it. How would the bands in a wire affect its electric resistance?
Define the term resistivity and state its S.I. unit. Which will have higher resistivity a conductor or an insulator.
