Question

Activity
Situation 1: Take a bulb, a battery, a switch and few insulated copper
wires. Connect the ends of the copper wires to the terminals of the battery
through the bulb and switch, Now switch on the circuit and obverve the
bulb.
What do you notice?
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Answer 1

Explanation:

A bookseller has 210 Science stream

books and 55 Arts stream books. He wants

to stack them in such a way that each stack

has the same numbers and they take up

the least area of the surface. If the

maximum number of books that can be

placed in each stack for this purpose is in

the form of 210 x5 +55y, then find the

value of y

Answer 2

Answer:

Aim : To check when a bulb glows in a circuit.

Materials required :

A bulb 2) a battery 3) a switch 4) insulated copper wire

Procedure (1) :

Take a bulb, a battery, a switch and few insulated copper wires.

Connect the ends of the copper wires to the terminals of the battery through the bulb and switch.

Now switch on the circuit.

Observation (1) : The bulb glows.

Procedure (2) :

Remove the battery from the circuit and connect the remaining components to make a complete circuit.

Again switch on the circuit and observe the bulb.

Observation (2) : The bulb does not glows.

Result: The battery contains charges which glows the bulb.

Explanation:

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