19 Electric Charge
Electrostatic:
The branch of physics which deals with electricity at rest is called electrostatic.
Electric charge:
The physical property of matter which causes it to experience a force of attraction and
repulsion when placed in an electromagnetic field is called electric charge. It's SI unit is
Coulomb
Properties of Charge
• like charges repel where as unlike Charges attract each
other.
• Electric charge are quantized. i.e. q = ± ne, which is
also termed as particle nature of electricity.
Where, q = charge
n = number (1,2,3,4,…..)
-19
e = charge of electron (1.6*10 C)
• Electric Charge is a scalar quantity.
• Electric charge is a conserved quantity.
• The magnitude of charge on a body is not affected by
the Speed of the body.
Numerical: How many electrons are contained in 1C of
charge?
, Electrostatic Induction:
When a charge body is brought near uncharged body equal and opposite Charged induced at near ends but Similar charge induced at far end such a process is known as
Charge at near end are bound Charge and charge at free end are called free charge.
, Induced Charge and inducing Charge
Two kinds of charge that appears on two ends of conductors due to induction are called induced Charge The Charge present in charged body which causes the other body to be
changed are called inducing charge.
Note:
• positive charge can be developed when glass rod rubbed with silk
• Negative charge Can be developed when rubber rod rubbed with Cloth or wool.
Electrostatic:
The branch of physics which deals with electricity at rest is called electrostatic.
Electric charge:
The physical property of matter which causes it to experience a force of attraction and
repulsion when placed in an electromagnetic field is called electric charge. It's SI unit is
Coulomb
Properties of Charge
• like charges repel where as unlike Charges attract each
other.
• Electric charge are quantized. i.e. q = ± ne, which is
also termed as particle nature of electricity.
Where, q = charge
n = number (1,2,3,4,…..)
-19
e = charge of electron (1.6*10 C)
• Electric Charge is a scalar quantity.
• Electric charge is a conserved quantity.
• The magnitude of charge on a body is not affected by
the Speed of the body.
Numerical: How many electrons are contained in 1C of
charge?
, Electrostatic Induction:
When a charge body is brought near uncharged body equal and opposite Charged induced at near ends but Similar charge induced at far end such a process is known as
Charge at near end are bound Charge and charge at free end are called free charge.
, Induced Charge and inducing Charge
Two kinds of charge that appears on two ends of conductors due to induction are called induced Charge The Charge present in charged body which causes the other body to be
changed are called inducing charge.
Note:
• positive charge can be developed when glass rod rubbed with silk
• Negative charge Can be developed when rubber rod rubbed with Cloth or wool.
