Domestic Electric Circuits

Where should be the safety devices such as fuse, MCB, etc. be connected in a circuit? Will it be before or after the electricity meter in the house?

A galvanometer is used to measure the electrical energy usage of our house.

Electricity usage of the house is measured by _____.

The safety devices such as fuse, MCB, etc. are connected before the electricity meter in the house.

State the use of electricity meter.

Read the given passage and answer the following question:

The home electrical connection consists of 'live', 'neutral' and 'earth' wires. The 'live' and the 'neutral' wires have potential difference of $220 \mathrm{V}$. The 'earth' is connected to ground. Due to a fault in the equipment or if the plastic coating on the 'live' and the 'neutral' wires give a path for the two wires to come in contact with each other and a large current flows through it producing heat. If any inflammable material (such as wood, cloth, plastic, etc.) exists around that place it can catch fire. Therefore, a fuse wire is used as a precautionary measure.

From the below choose the name of the wire that is used to limit the current in an electric circuit by melting due to overheating when excessive current passes through it.

Read the given passage and answer the following question:

The home electrical connection consists of 'live', 'neutral' and 'earth' wires. The 'live' and the 'neutral' wires have potential difference of $220 \mathrm{V}$. The 'earth' is connected to ground. Due to a fault in the equipment or if the plastic coating on the 'live' and the 'neutral' wires give a path for the two wires to come in contact with each other and a large current flows through it producing heat. If any inflammable material (such as wood, cloth, plastic, etc.) exists around that place it can catch fire. Therefore, a fuse wire is used as a precautionary measure.

Choose the two wires having potential difference of $220 \mathrm{V}$.

At the time of the short circuit, the current in the circuit_____________.

If the live wire and neutral wire come in contact either directly or via conducting wire, then it is called _____.

At the time of short circuit, the current in the circuit

The melting point of the wire used in the heater element is high while a _____wire has a low melting point.

The _____ effect of electric current is used in the working of an electric fuse.

What is a fuse?

Smart plugs collects information about _____ usage of appliances.

Smart light with motion detector can save the energy by controlling the LED lights.

Smart power strip prevents the household appliances from wasting power.

An electrical connection which is not complete with a broken path is known as _____ circuit.