1. Mass of neutron is – 1.675×10^-27kg
2. Charge on neutron is – uncharge
3. Mass of proton is – 1.672 ×10^-27kg
4. Charge on proton is – (positive) 1.6×10^-19 colamb
5. Mass of electron is -9. 1 ×10^-31kg
6. Charge on electron is – ( negative) 1.6×10^-19colamb
7. Unit of charge is –colamb
8. Symbol of charge is – Q
9. Q = ne (formula)
,Basic concepts of Electrical engineering
Where Q is charge in colamb
n is number of electron
& e is charge on electron ( 1.6 ×10^-19 colamb)
1. Number of electron in 1 colamb charge is – 6.28×10^18
2. I = Q/T formula to find current
Where I is current in ampere
Q is charge in colamb
& T is time in second
, Basic concepts of electrical engineering
1.Speed of current is – 3×10^8 meter /second
2.Rating of battery or cell is - Ampere-hours
3.Speed = distance / time
4.SI unit of current is – ampere
5. Q = I×t ( formula of charge)
Where Q is charge in colamb
I is current in ampere
& t is time in second