Draw a labelled diagram with the necessary switch, regulator, etc. to connect a bulb and a fan with the mains. In what arrangement are they connected to the mains : series or parallel ?

The diagram in Fig. shows three lamps and three switches 1, 2 and 3 connected with two cells. How are then the lamps connected : in series or in parallel ?

There are two electric bulbs of 40 W and 100 W . Which one will be brighter when first connected in series and then in parallel ?

What are the advantages of connecting electrical devices in parallel with the battery instead of connected them in series ?

Draw a labelled diagram of an alternating current generator. Write the function of its two main parts.

Draw a neat and labelled diagram of a screw gauge. Name its main parts and state their functions.

A parallel combination of an 8 Omega resistor and an unknown resistor R is connected in series with a 16 Omega resistor and a battery. This circuit is then disassembled, and the three resistors are then connected in series with each other oand the same battery. in both arrangements, the current through the 8 Omega resistor is the same. What is the unknown resistance R?

Fig. below shows two bulbs with switches and fuse connected to the mains through a three pin socket by means of a three wires cable. How are the two bulbs joined : in series or in parallel ?

From the figures given below, identify the bulbs connected in parallel and in series.

The diagram below shows a dual control switch circuit connected to a bulb. Out of A and B which one is the live wire and which one is the neutral wire ?

Draw a labelled energy band diagram for a solid which is an insulator. What is the main difference between this diagram and that of a semiconductor?