Question
State one advantage of using the main switch in house wiring.

Answer

The main switch is a double pole switch with an iron covering.

The major advantage of using a main switch is that it can break the connection of both, the live and the neutral wire at the same time.

This protects electrical appliances from accidental damage due to electrical faults.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

State the snell’s laws of refraction of light.
Explain the following and illustrate your answer by drawing appropriate diagram:
Loudness
State the principle of moments. A meter scale is pivoted at 30 cm mark and it is in equilibrium when a mass of 40 g is suspended from 10 cm mark. Calculate the mass of the ruler.
Calculate the current through a 60 W lamp rated 250 V. If the line voltage falls to 200 V, how is power consumed by the bulb affected?
Refer to fig
(i) Name the lens L.
(ii) What are the points O, O' called?
(iii) Complete the diagram to form the image of the object AB.
(iv) Write three characteristics of the image.
Two resistors of 4 Ω and 6 Ω are connected in parallel. The combination is
connected across a 6 volt battery of negligible resistance. Calculate:
( i) The power supplied by the battery,
(ii) The power dissipated in each resistor.
The diagram given below shows the position of an object $OA$ in relation to a converging lens whose foci are at $F_1$​​​​​​​ and $F_2​​​​​​​$​​​​​​​.



draw two rays to locate the position of the image.
Name three factors on which the magnitude of force on a current carrying conductor placed in a magnetic field depends and state how does the force depend on the factors stated by you.
A 0.6 m long stretched wire is made to vibrate in two different modes as shown in figure
(a)

(b)

(i) If the frequency of the note produced in (b) is n, what is the frequency in case (a)?
(ii) In which case (a) or (b), is the note louder? Give reasons.
(iii) In which case is the pitch higher? Give reason.
Study the diagram alongside carefully and calculate the magnitude of resistance offered by resistor $x$.