Question

3. Which combination is preferred for domestic purposes and why?
4.What is difference between resistance and resistivity? On what factors it depends.
5. What is effective resistance of circuit when two or more resistance are connected in series and parallel combination?​

Answer 1

Answer:

When appliances are connected in a parallel arrangement, each of them can be put on and off independently. This is a feature that is essential in a house's wiring. Also, if the appliances were wired in series, the potential difference across each appliance would vary depending on the resistance of the appliance.

Answer 2

Answer:

3)Parallel combination.

4)SI unit of resistance is ohm.

but SI unit of resistivity is ohm-m

5)when it will be connected in series it's resistance will increase.and when connected in parallel it's resistance will decrease.