(d) When do we connect resistances in parallel and in series?
Answers
Answer:
vconnect resistance in parallel because current is divided and voltmeter is same and in series we connect resistance because current is same voltmeter is divided in series combination we have advantage that we have a disadvantage if once electric appliance will fail to work than the others electric appliance will not work
Answer:
Resistors in Series
Resistors are said to be in series whenever the current flows through the resistors sequentially. Consider Figure 6.2.2, which shows three resistors in series with an applied voltage equal to V_{ab}. Since there is only one path for the charges to flow through, the current is the same through each resistor. The equivalent resistance of a set of resistors in a series connection is equal to the algebraic sum of the individual resistances.
Explanation:
Resistors in Parallel
Figure 6.2.4shows resistors in parallel, wired to a voltage source. Resistors are in parallel when one end of all the resistors are connected by a continuous wire of negligible resistance and the other end of all the resistors are also connected to one another through a continuous wire of negligible resistance. The potential drop across each resistor is the same. Current through each resistor can be found using Ohm’s law I=V/R, where the voltage is constant across each resistor. For example, an automobile’s headlights, radio, and other systems are wired in parallel, so that each subsystem utilizes the full voltage of the source and can operate completely independently. The same is true of the wiring in your house or any building.
