(English Medium) ICSE Class 10 - CISCE Important Questions for Physics

State the characteristics required in a material to be used as an effective fuse wire.

At what voltage is this current available to our household?

For a fuse, higher the current rating ______ is the fuse wire.

Name the device used to increase the voltage at a generating station.

Name the wire in a household electrical circuit to which the switch is connected.

Identify the following wires used in a household circuit: The wire is also called as the phase wire.

Identify the following wires used in a household circuit: The wire is connected to the top terminal of a three pin socket.

A fuse is rated 8A. Can it be used with an electrical appliance rated 5 KW, 200 V ? Give a reason.

An electric iron is rated 220V, 2kW.

1) if the iron is used for 2h daily find the cost of running it for one week if it costs 4.25 per kWh

2) Why is the fuse absolutely necessary in a power circuit?

What is a fuse? 

(i) Write one advantage of connecting electrical appliances in parallel combination. 
(ii) What characteristics should a fuse wire have ?
(iii) Which wire in a power circuit is connected to the metallic body of the appliance ?

The diagram below shows a dual control switch circuit connected to a bulb. 

(i) Copy the diagram and complete it so that the bulb is switched ON.
(ii) Out of A and B which one is the live wire and which one is the neutral wire ?

Which one of the following statements is correct?

(a) Name the electrical appliance shown in the diagram below.

(b) Name the material of the wire used in this device.

(c) Name two important characteristics of this wire.

Which electrical component protects the electric circuit in case of excess current and which can also be used as a switch?

Name the wire to which this electrical component is connected in an electric circuit. 

Identify the option that displays the correct wiring with correct colour code:

If live wire makes an accidental contact with the metal case, which circuit (A or B) in the diagram, illustrating an electric iron, is considered safe for the user (Assuming the fuse is present in the live wire in both circuits)? Justify your answer.

Which coil of a step up transformer is made thicker and why?

Name the transformer used in the power transmitting station of a power plant.