Advertisements
Advertisements
प्रश्न
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.
Advertisements
उत्तर १
For the same change in I, change in V is less for the straight line A than for the straight line B (i.e. the straight line A is less steeper than B). The straight line A represents small resistance, while the straight line B represents more resistance. The equivalent resistance is less in a parallel combination than in a series combination. So, line A represents a parallel combination.
उत्तर २
‘A’ shows parallel combination because in case of parallel combination, the resistance is less for their potential is less, currents is more.
संबंधित प्रश्न
Judge the equivalent resistance when the following are connected in parallel − (a) 1 Ω and 106Ω, (b) 1 Ω and 103Ω and 106Ω.
Name the material which is used for making the heating element of an electric iron.
You are supplied with a number of 100 Ω resistors. How could you combine some of these resistors to make a 250 Ω resistor?
Name the following substances:
(i) Showing low resistivity,
(ii) Showing very high resistivity,
(iii) Showing moderate resistivity.
What is the equivalent resistance between the points X and Y for the given network?
Two resistors of 4Ω and 6Ω are connected in parallel to a cell to draw 0.5 A current from the cell. Calculate the current in each resistor.
Two resistors having 2Ω and 3Ω resistance are connected—(i) in series, and (ii) in parallel. Find the equivalent resistance in each case.
If R1 and R2 be the resistance of the filament of 40 W and 60 W respectively operating 220 V, then:
