Give three reasons why different electrical appliances in a domestic circuit are connected in parallel.
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Different electrical appliances in a domestic circuit are connected in parallel because of the following advantages:
If one electrical appliance stops working due to some defect, then all other appliances keep working properly.
Each electrical appliance has its own switch due to which it can be turned on or turned off independently, without affecting other appliances.
Each electrical appliance gets the same voltage as that of the power supply line.
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What is a circuit diagram? Draw the labelled diagram of an electric circuit comprising of a cell, a resistor, an ammeter, a voltmeter and a closed switch (or closed plug key). Which of the two has a large resistance: an ammeter or a voltmeter?
A p.d. of 6V is applied to two resistors of $3 Ω$ and $6 Ω$ connected in parallel. Calculate:
The combined resistance.
The current flowing in the main circuit.
The current flowing in the $3 Ω$ resistor.
The electrical resistivities of five substances A, B, C, D and E are given below:
$\begin{matrix}\text{B}&110\times10^{-8}\Omega\text{ m}\\\text{C}&2.60\times10^{-8}\Omega\text{ m}\\\text{D}&10.0\times10^{-8}\Omega\text{ m}\\\text{E}&1.70\times10^{-8}\Omega\text{ m}\end{matrix}$