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.
APPEARS IN
संबंधित प्रश्न
In series combination which remains constant?
(a) Voltage
(b) Current
(c) Both current and voltage
(d) Both are variables
If the equivalent resistance is to be increased, then the number of resistances should be connected in
- Series
- Parallel
- Mixed arrangement
- None of the above
(i) Two sets A and B, of three bulbs each, are glowing in two separate rooms. When one of the bulbs in set A is fused, the other two bulbs also cease to glow. But in set B, when one bulb fuses, the other two bulbs continue to glow. Explain why this phenomenon occurs.
(ii) Why do we prefer arrangements of Set B for house circuiting?
Calculate the combined resistance in the given case:
In series combination of resistances ______.
A given metallic wire of resistance R is doubled on itself. What will be its new resistance?
Write an expression for the resistance of a conducting wire in terms of its length and area of cross-section.
Two wires of same material and same lengths have radii in the ratio of 2 : 3, Compare their resistances.
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:
