Saved Bookmarks
| 1. |
(a) Why does resistance increase in a series combination of resistors ? (b) Why does resistance decrease in a parallel combination of resistors ? |
|
Answer» (a) Connecting a number of resistors in series is equivalent to increasing the effective length (l) of the conductor. Recall `R prop l`. (b) Connecting a number of resistors in parallel is equivalent to increasing the effective cross-sectional area (A) of the conductor Recall `R prop 1//A`. |
|