Class 7 th
chapter- electric current and it's effect
Don't spam❌❌
Koi mele ko bta skta h ki examfear ke notes kacche rhte h ......
Mei use kr skti hu kya uss app ki notes ??....... ya only bde students ke liye hote h ??
Answers
Answer:
If we combine two cells by keeping the positive terminal of one cell in contact with the positive terminal of the other cell or negative terminal of one cell in contact with the negative terminal of the other cell, then the battery obtained will not work.
The batteries which are used in cars, buses, trucks, inverters, etc., are also made of cells. There is a special feature of car battery is that its cells can be recharged. Ordinary cells, however, cannot be recharged.
Connection of Cells/Battery
‘+’ and ‘-‘ symbols are printed in the battery in order to have an exact placement of the cells in their respective battery compartment.
The switch or key can be placed anywhere in the circuit.
The circuit is complete and it is said to be closed only when the switch is ON.
The circuit is incomplete and it is said to be open, only when the switch is OFF.
There is a thin wire in the bulb, called filament which glows when an electric current passes through it. So, if the bulb gets fused, then its filament gets broken.
Note: Never touch a lighted electric bulb connected to the mains as it may be very hot and can damage your hands.
Explanation:
Sis, ye also known as battery ke aage h
Answer:
1.) Circuit
2.) Electrons
3.) Bridge Circuit
4.) high
5.) Steel
6.) positive to negative
7.) Tungsten
8.) protect circuit
9.) Mutual induction