$CATEGORY: Science - Khan Academy/13.Magnetic Effect of electric current/13.Magnetic Effect of electric current--Domestic Electric Circuits

//Multiple Choice

What is the main purpose of a fuse in a domestic circuit? {
    ~To increase current
    ~To provide insulation
    =To protect appliances from overloading
    ~To reduce voltage
}

Which material is commonly used for making the fuse wire? {
    ~Copper
    ~Silver
    =Tin-lead alloy
    ~Aluminum
}

What happens when the current exceeds the rating of a fuse? {
    =Fuse wire melts and breaks the circuit
    ~Fuse wire expands
    ~Fuse wire increases the current
    ~Fuse wire cools down
}

In a domestic circuit, the connection between the main switch and the distribution box is called\: {
    ~Series connection
    =Parallel connection
    ~Loop connection
    ~Single connection
}

Which type of circuit is used in homes for distributing electricity? {
    ~Series circuit
    =Parallel circuit
    ~Open circuit
    ~Short circuit
}

What is the purpose of high resistance in a fuse wire? {
    ~To prevent current from flowing
    =To produce more heat and melt quickly
    ~To increase the current in the circuit
    ~To conduct electricity efficiently
}

What is the function of a distribution box in a domestic circuit? {
    ~Measures the electricity consumed
    =Divides electrical supply into different circuits
    ~Reduces voltage
    ~Increases power supply
}

Which device records the amount of electrical energy consumed by a household? {
    ~Fuse
    ~Distribution box
    =Electricity meter
    ~Circuit breaker
}

Which circuit type is most commonly used in domestic wiring? {
    ~Series circuit
    =Parallel circuit
    ~Mixed circuit
    ~None of the above
}

A fuse has a low melting point because\: {
    =It needs to melt easily during excessive current flow
    ~It needs to conduct more electricity
    ~It prevents overheating of appliances
    ~It enhances current flow in normal conditions
}

//True or False

A fuse prevents the flow of excess current by increasing the resistance. {F}

In a domestic circuit, appliances are connected in series to ensure they all receive the same current. {F}

A short circuit is a dangerous condition that occurs when the live and neutral wires come into direct contact. {T}

The fuse wire has a high melting point, which ensures it does not melt under normal conditions. {F}

Each household appliance can be controlled individually in a parallel circuit. {T}

//Fill in the blanks



//Numericals



//Match the following

Match the following items from Column A with their correct corresponding options from Column B\:
{
=Fuse -> Protects from overloading
=Parallel circuit -> Ensures each appliance gets same voltage
=Main switch -> Controls power to entire house
=Short circuit -> Direct contact of live and neutral wires
=Low melting point -> characteristics of fuse wire
}


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