Sophomor Answer the following questions
1. Which physical quantity remains the same for all the resistors in series combination?
2. Which physical quantity remains the same for all the resistors in parallel combination?
3. Four resistors R1, R2, R3 and R4 are connected in series. Draw a circuit diagram and derive
an expression for the equivalent resistance of the combination.
4. Two resistances R1 and R2 are connected in parallel. Draw a circuit diagram and derive an
expression for the equivalent resistance of the combination.
A
5. The V-I graph for the parallel and series combination of three
resistors R1, R2 and R3 is shown in the figure. Which graph shows
the series combination? Explain the reason of your choice.
B
V
6. What are the advantages of parallel circuit in domestic wiring?
7. Why isn't a series arrangement not used for domestic wiring?
do