Advertisements
Advertisements
प्रश्न
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.
विकल्प
9
6
1
5
Advertisements
उत्तर
9
APPEARS IN
संबंधित प्रश्न
Find the expression for the resistors connected in series and write the two characteristics of it. (Draw figure).
Judge the equivalent resistance when the following are connected in parallel − (a) 1 Ω and 106Ω, (b) 1 Ω and 103Ω and 106Ω.
The V-I graph for a series combination and for a parallel combination of two resistors is shown in the figure below. Which of the two A or B. represents the parallel combination? Give reasons for your answer.
Two resistors of 4Ω and 6 Ω are connected in parallel to a cell to draw 0.5 A current from the cell.
(i) Draw a labelled circuit diagram showing the above arrangement.
(ii) Calculate the current in each resistor. What is an Ohmic resistor?
How does the presence of impurities in a metal affect its resistance?
How does the resistance of a wire change when:
its length is tripled?
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
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?
How does the resistivity of an alloy such as constantace depends on temperature.
State expression for Resistance connected in series.
Calculate the equivalent resistance between P and Q from the following diagram:
In the circuit shown below, calculate the equivalent resistance between the points (i) A and B, (ii) C and D.
What is the equivalent resistance between the points X and Y for the given network?
If R1 and R2 be the resistance of the filament of 40 W and 60 W respectively operating 220 V, then:
What is the maximum resistance which can be made using five resistors each of `1/5` W?
Two electric bulbs have resistances in the ratio 1 : 2. If they are joined in series, the energy consumed in them is in the ratio:
