Education
- Discovery Of Electron By Discharge Tube Experiment
INTRODUCTIONGases are bad conductors of electricity. However under reduced pressure and at high potential difference gases conduct electric current.DISCHARGE TUBEDischarge tube is a glass tube fitted with two electrodes placed opposite to each other....
- Most Important Numericals Of Electrical Circuits For Class 12 Science.
Hi I am Subash Bhattarai,admin of this blog and student of science.Now in this post I am gonna give you some important physics questions generally numerical problems of electricity topic.The problems i have given below are of challenging or miscellaneous...
- Electrical Generator,generator Construction And Working
Principle "An electric generator is a device used to convert mechanical energy into electrical energy. The generator is based on the principle of "electromagnetic induction" discovered in 1831 by Michael Faraday, A British scientist. Faraday discovered...
- Faraday's Law Of Electromagnetic Induction
Faraday introduced the law of induction of current when conductor cuts the magnetic field.This law is mostly used in motors,dynamo,generator etc.The main postulates of Faraday's laws are as follows:- FIRST LAWFirst Law of Faraday's Electromagnetic...
- Discovery Of Ions
The person who gives a theory of ions is Michael Faraday. It’s around 1830. He describes the portions of molecules that move from anode to cathode or vice versa. He discovered that certain substances when dissolved in water conduct an electric current....
Education
Why A.C. Is More Dangerous Than D.C.?
Alternating current a.c. Is an induced current whose magnitude and direction changes periodically with time and has sine function in time-magnitude graph.
But in case of direct current,magnitude and direction of current remains same throughout the time.
Due to the changing magnitude of ac,the peak value can not be obtained.Numerically the peak value of ac is given by,
I(peak)=root2 times I(rms)
Hence for 220v dc and ac,peak value of dc is always 220v but for ac,peak value will be 220*root2=311.12v.
Thus ac current is more dangerous than dc.
- Discovery Of Electron By Discharge Tube Experiment
INTRODUCTIONGases are bad conductors of electricity. However under reduced pressure and at high potential difference gases conduct electric current.DISCHARGE TUBEDischarge tube is a glass tube fitted with two electrodes placed opposite to each other....
- Most Important Numericals Of Electrical Circuits For Class 12 Science.
Hi I am Subash Bhattarai,admin of this blog and student of science.Now in this post I am gonna give you some important physics questions generally numerical problems of electricity topic.The problems i have given below are of challenging or miscellaneous...
- Electrical Generator,generator Construction And Working
Principle "An electric generator is a device used to convert mechanical energy into electrical energy. The generator is based on the principle of "electromagnetic induction" discovered in 1831 by Michael Faraday, A British scientist. Faraday discovered...
- Faraday's Law Of Electromagnetic Induction
Faraday introduced the law of induction of current when conductor cuts the magnetic field.This law is mostly used in motors,dynamo,generator etc.The main postulates of Faraday's laws are as follows:- FIRST LAWFirst Law of Faraday's Electromagnetic...
- Discovery Of Ions
The person who gives a theory of ions is Michael Faraday. It’s around 1830. He describes the portions of molecules that move from anode to cathode or vice versa. He discovered that certain substances when dissolved in water conduct an electric current....