TN Phy, Unit - 2, Current Electricity

                        Welcome To




Class : XII
Subject : Physics
Unit : 2
Unit Name : Current Electricity

IMPORTANT QUESTIONS



2 Marks


1. Distinguish between drift velocity and mobility.

2. Define electrical resistivity. Mention its unit.
 
3. Define temperature coefficient of resistance. Mention its unit.

4. Distinguish electric power and electric energy?

5. What is Thomson effect?

6. What is Peltier effect?




3 Marks


1. Obtain the macroscopic form of Ohm’s law from its microscopic form and discuss its 
limitation.

2. State and explain Kirchhoff’s rules.

3. Explain the equivalent resistance of a series and parallel resistor network.

4. Explain the determination of the internal resistance of a cell using voltmeter.


5 Marks


1. Describe the microscopic model of current and obtain general form of Ohm’s law.

2. Obtain the condition for bridge balance in Wheatstone’s bridge.



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