Question

multiple-choice questions

i) If conductors A and B are connected in series and I-V graph is plotted for the
combination, its slope would be:
a) less than that of A b) more than that of A.
c) between A and B. d) more than that of D

ii) If conductors C and D are connected in parallel and I-V graph is plotted for the
combination, its slope would be:
a) lesser than that of A. b) more than that of D.
c) between C and D. d) between B and C

iii) Which one of the following relations is true for these conductors:
a) RA
>RB>RC>RD
b) RA c) RA=RB=RC=RD
d) RA
= RB< RC

Answer 1

The change of the slope with series and parallel combination is given below:

• For the first, as the combination is in series which means the voltage will increases withe the increase of resistance and the current will decrease.
• So the slope will be more than that of A
• For, the second one the combination is parallel which means more current will be there and less resistance.
• Therefore the less than that of A
• In the third one option D is correct because with increases in resistance current decreases and voltage increases.