In your opinion, how did the battle effect Alexander and King Porus?
Answers
Answer:
Alexander is the king in 7th class there is lesson of puru the brave
Connecting wires
2. Switch in “ON” position
3. Electric Bulb
4. Electric Cell
5. Switch in “OFF” position
6. Battery
Question2.
Draw the circuit diagram to represent the circuit shown in Fig?
Answer:
In the above circuit one end of the bulb is connected to the battery and another end to the safety pin.
But the other end of the battery is not connected to the safety pin. Therefore there will be no flow of current as the switch is in “OFF” position.
This shows the circuit is not complete.
Circuit diagram of the above electric circuit will be:
Question 3.
The given figure shows four cells fixed on a board.
Draw lines to indicate how you will connect their terminals with wires to make a battery of four cells.
Answer:
In order to make battery, the positive terminal (+) of one cell should be connected to the (-) terminal of another cell and so on.
Question 4.
The bulb in the circuit shown in figure does not glow. Can you identify the problem? Make necessary changes in the circuit to make the bulb glow.
Answer:
The positive terminal (+) of one cell should always be connected to negative terminal (-) of another cell.
But in case of above circuit both the positive terminals are connected to each other. This is the reason battery is not able to generate electricity.
Therefore the change which should be made to the circuit will be that the positive terminal (+) should be connected to negative terminal (-) of the cell and vice-versa.