Syllabus ‘Current Electricity’
- Electric current,
- Electric current in conductors,
- Ohm’s law ,
- Factors affecting resistance of a conductor
- Current density and electric field,
- Drift of electrons, Drift velocity and the origin of resistivity, mobility,
- limitations of Ohm’s law,
- V-I characteristics of Ohmic and non-ohmic conductors
- Resistor colour codes,
- Temperature dependence of resistivity,
- Calculating resistance for different shapes
- Electrical energy,
- Power,
- Combination of resistors,
- Cells,
- emf and internal resistance of a cell,
- Maximum power transfer theorem
- Cells in series and parallel,
- Kirchoff’s laws
- Earthing or grounding in an electric circuit,
- Wheatstone bridge,
- Equivalent resistance of complex networks
- Metering circuits,
- Galvanometer,
- Ammeter,
- Conversion of galvanometer to ammeter
- Voltmeter,
- Conversion of galvanometer to voltmeter,
- Error in the measurement by ammeter/voltmeter
- Meter bridge,
- potentiometer application of potentiometer,
- Sensitivity of potentiometer
- R-C circuit,
- Steady state R-C circuit,
- Transient R-C circuit
- Charging and discharging of a capacitor through resistance,
- Complex RC circuit
