Two cells having the same e.m.f. are connected in series through an external resistance R. Cells have internal resistances ra and r2 (rı >r2) respectively. When the circuit is closed, the potential difference across the first cell is zero. The value of R is ritr2 1 - 12 b) ri -12 11+12 2 2 d) O O
Answers
Answered by
0
Explanation:
If two quantities x and y vary (change) together in such a manner that the ratio of their corresponding values remains constant, then x and y are said to be in direct proportion.• if two quantities x and y vary (change) in such a manner that an increase in x causes a proportional decrease in y (and vice versa), then x and y are said to be inverse proportion.
• If x and y are in a direct proportion, then • If x and y are in an inverse variation, then xy = constant.
Similar questions