(English Medium) ICSE Class 10 - CISCE Important Questions

(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.

What type of current is transmitted from the power station?

On reversing the direction of the current in a wire, the magnetic field produced by it gets ______.

Why does a current carrying, freely suspended solenoid rest along a particular direction?

State the direction in which current-carrying freely suspended solenoid rests

Give two similarities an AC generator and a DC motor

Name a common device that uses electromagnets.

Name two factors on which the magnitude of an induced e.m.f. in the secondary coil depends.

In the following diagram an arrow shows the motion of the coil towards the bar magnet.
(1) State in which direction the current flows, A to B or B to A?
(2) Name the law used to come to the conclusion.

How is the e.m.f. across primary and secondary coils of a transformer related with the number of turns of the coil in them?

On which type of current do transformers work?