Q. 135.0( 1 Vote )

i. In a household

Answer :

(i) In a parallel circuit, the voltage across each of the components is the same, and the total current is the sum of the currents through each component.


Household electric circuit different appliances are connected in parallel to one another because:


• In parallel circuits, different appliances have the same potential difference, and the current is divided amongst them.


• If one item stops to work properly then the rest doesn't stop. The operation of each appliance is not dependent on the other. Switching off any appliance will not affect the working of other appliance.


(ii) Given,


Electrical fuse rating = 15 A


Power of heater = 1.5 kW


Voltage = 220 V


The safe current drawn by the electrical heater is given by,



The fuse will not blow off even if the current in the heater will exceed the current needed. This may damage the electrical heater and can cause firing.


To avoid this mishap, any fuse of lower ampere range needs to be put in the circuit.


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