CURRENT ELECTRICITY - I
1.Electric Current
2.Conventional Current
3. Drift Velocity of electrons and current
4. Current Density
5. Ohm’s Law
6. Resistance, Resistivity, Conductance & Conductivity
7. Temperature dependence of resistance
8. Colour Codes for Carbon Resistors
9.Series and Parallel combination of resistors
10. EMF and Potential Difference of a cell
11. Internal Resistance of a cell
12. Series and Parallel combination of cells Electric Current:
The electric current is defined as the charge flowing through any section of the conductor in one second.
I = q / t (if the rate of flow of charge is steady)
I = dq / dt (if the rate of flow of charge varies with time)
Different types of current:
I
t0abc
d) Alternating current whose magnitude varies continuously and direction changes periodicallya)Steady current which does not vary with time b) & c) Varying current whose magnitude varies with timed
1.Electric Current
2.Conventional Current
3. Drift Velocity of electrons and current
4. Current Density
5. Ohm’s Law
6. Resistance, Resistivity, Conductance & Conductivity
7. Temperature dependence of resistance
8. Colour Codes for Carbon Resistors
9.Series and Parallel combination of resistors
10. EMF and Potential Difference of a cell
11. Internal Resistance of a cell
12. Series and Parallel combination of cells Electric Current:
The electric current is defined as the charge flowing through any section of the conductor in one second.
I = q / t (if the rate of flow of charge is steady)
I = dq / dt (if the rate of flow of charge varies with time)
Different types of current:
I
t0abc
d) Alternating current whose magnitude varies continuously and direction changes periodicallya)Steady current which does not vary with time b) & c) Varying current whose magnitude varies with timed
