Advertisements
Advertisements
प्रश्न
You are provided with three resistors of resistance 1.0 Ω, 2.0 Ω and 3.0 Ω How would you connect them to obtain the total effective resistance 1.5 Ω? Draw diagram of the arrangement and check it by calculations.
उत्तर
Two resistors of resistance 1.0 Ω and 2.0 Ω are connected in series and then this combination is connected in parallel with the resistor of resistance 3.0 Ω. The arrangement is shown in given figure alongside
Total resistance of series combination R = 1 + 2 = 3 Ω.
Total effective resistance of parallel combination
R = `(3 xx 3)/(3 + 3) = 1.5 Ω`
APPEARS IN
संबंधित प्रश्न
Name the material which is the best conductor of electricity.
Write down an expression for the resistance of a metallic wire in terms of the resistivity.
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
The diagram below shows part of a circuit:
If this arrangement of three resistors was to be replaced by a single resistor, its resistance should be:
(a) 9 Ω
(b) 4 Ω
(c) 6 Ω
(d) 18 Ω
How does the resistivity of a semiconductor depend on temperature?
State a relation between electrical power, resistance and potential difference in an electrical circuit.
Six resistances are connected together as shown in the figure. Calculate the equivalent resistance between points A and B.
What is the equivalent resistance between the points X and Y for the given network?
Calculate the value of the resistance which must be connected to a 15 ohm resistance to provide on effective resistance of 6 ohm.
