You asked: Why is an electric fuse required in all electrical appliances Class 7?

Answer: An electric fuse is required for it acts as a safety device and it checks excessive current flow. The primary use of an electric fuse is to protect electrical equipment from excessive current and to prevent short circuits or mismatched loads.

Why is an electric fuse required in all appliances Class 7?

Since the current in series remains the same, the fuse wire gets melted and breaks the circuit thereby protecting the appliance from getting damaged. Hence an electric fuse required in all electrical appliances for the protective reason of the appliance.

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What is the use of electric fuse Class 7?

Solution: Electric fuse is a safety device used to limit the current in an electric circuit which melts and breaks the circuit whenever there is an excess flow of current through the circuit.

What is an electric fuse state its purpose in the household electrical circuit?

FUSE: “Is a safety device that is used to limit the current in an electric circuit. PURPOSE OF FUSE IN HOUSEHOLD CIRCUIT: It safeguards the circuit and the appliance connected in the circuit from being damaged if the current in the circuit exceeds the specified value due to voltage fluctuation or short-circuiting.

Why is electric fuse required for all electrical appliances?

Answer: An electric fuse is required for it acts as a safety device and it checks excessive current flow. The fuse wire melts and breaks the electric circuit when there is a supply of large current or malfunctioning in the electric connections. …

Why is an electric fuse required in all electrical appliances *?

Answer: a fuse is a device which has low melting point. So when high amount of current passes through it , due to heating effect if electric current, it melts and thus breaks the circuit to prevent the flow of electricity. As a result it prevents short circuit and saves the electrical appliance from damage.

What is the role of fuse used in series with any electrical appliance Why should a fuse with defined rating not be replaced by one with larger rating?

Fuse is used for protecting appliances due to short circuiting or overloading. … If a fuse is replaced by one with larger ratings, the appliances may get damaged while the protecting fuse does not burn off. This practice of using fuse of improper rating should always be avoided.

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What is an electric fuse explain the working of an electric fuse?

Fuse is an overcurrent responsive safety device used to protect an electrical circuit from the effects of excessive current. … Its essential component is a strip of metal that will melt when the electric current in the circuit exceeds the fuse’s rated value. The element in the fuse melts and opens the circuit.

What is an electric circuit for Class 7?

An electric circuit can be defined as a closed path through which electric current can flow. Various components such as battery, resistor, wire, key, bulb etc.

What is an electric fuse what are its benefits?

Fuse is the cheapest protection device in electrical circuit against short circuits and overloading of circuits. … Fuse provides protection against excessive currents which can flow in circuit during short circuits.

What is an electric fuse why it is used in electric circuits should it be placed on neutral wire or on live wire justify your answer?

Fuse should be placed on live wire because the live wire has the higher voltage. If the live wire is damaged inside the appliance and a large current is created, then the fuse needs to be in this part of the circuit so that it can blow.

What is an electric fuse What is its role in electric circuits should it be placed on neutral wire justify your answer?

An electric fuse is a low resistance resistor that provides protection in the event of a overload current. Fuse should be placed on live wire because the live wire has the higher voltage.

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What type of electric fuse is used in individual electrical appliances?

Answer : Cartridge fuses are used in electrical appliances like car stereos. This type of fuse consist of consists of a glass tube T having a thin fuse wire sealed inside it. The glass tube has two metal caps at its two ends.

Where the electric fuse is found?

An electric fuse is based on the principle of heating effect of electric current. It is made up of thin metallic wire of non-combustible material. A fuse is always connected between the ends of the terminal in a series connection with the circuit.

Which of the following appliances uses the heating effect of the electric current?

(1) The heating effect of electric current is utilised in the working of electrical heating appliances such as electric room heater, electric iron, electric kettle, electric toaster, electric oven, water heater (geyser), immersion rod, and soldering iron, etc.