Science - Electricity - Ask NCERT

Question-Science - Electricity - Ask NCERT class 0 with solution questions answer. All ncert questions Answers for class 0 subject Science chapter and topic Electricity

Manisha Kumari

 difference between electric pressure is called potential difference

Shruti Srivastva

 Diffrence between electric pressure.

priyanshu kumar
The rate of flow of charge of electron is called Electric current

Akki chauhan
The rate of flow of charge of electron is called Electric current

priyanshu kumar

AC generator is a device which converts mechanical energy into alternating form of electrical energy. It works on the principle of electromagnetic induction. When a closed coil is rotated in a uniform magnetic field with its axis perpendicular to the magnetic field, the magnetic field lines passing through the coil change and an induced emf is produced causing the flow of current in it. 

Himanshi Verma

 AC generator is a device which converts mechanical energy into alternating form of electrical energy. It works on the principle of electromagnetic induction. When a closed coil is rotated in a uniform magnetic field with its axis perpendicular to the magnetic field, the magnetic field lines passing through the coil change and an induced emf is produced causing the flow of current in it. 

priyanshu kumar

Ohm's law states that under constant temperature, the current passing through conductor is directly proportional to potential difference applied across it.

i.e., V = IR

Where,  V = potential difference R = Resistance (constant) I = Current

Ohm's law can be verified using following circuit diagram, 

Himanshi Verma

Ohm's law states that under constant temperature, the current passing through conductor is directly proportional to potential difference applied across it.

i.e., V = IR

Where,  V = potential difference R = Resistance (constant) I = Current

Ohm's law can be verified using following circuit diagram, 

Himanshi Verma

The current flow more easily through a thick wire as compared to thin wire of the same material, when connected to the same source. It is due to the reason that resistance increases with decrease in thickness.

Himanshi Verma

Advantages of connecting electrical devices in parallel with the battery are as follows:

1) Voltage across each connecting electrical device is same and device take current as per its resistance.

2) Separate on/off switches can be applied across each device.

3) Total resistance in parallel circuit decreases, hence a great current may be drawn from cell.

4) If one electrical device is damaged, then other devices continue  to work properly.

Akki chauhan
Silicon

Himanshi Verma

Silicon

priyanshu kumar
 Watt is the SI unit of power.

Himanshi Verma

 Watt is the SI unit of power.

priyanshu kumar
One volt is the potential difference between two points in a current carrying conductor when 1 joule of work is done to move a charge of 1 coulomb from one point to another.

Rohit Rajput
One volt is the potential difference between two points in a current carrying conductor when 1 joule of work is done to move a charge of 1 coulomb from one point to another.

Himanshi Verma
One volt is the potential difference between two points in a current carrying conductor when 1 joule of work is done to move a charge of 1 coulomb from one point to another.

priyanshu kumar
The rate of doing work is Power. 

p=V×I

Akki chauhan
The rate of doing work is Power. 

p=V×I