Sunday, May 17, 2009

CURRENT ELECTRICITY TEST Q.NO-2


CURRENT ELECTRICITY TEST Q.NO-2
3-MARKS
1.Define conductor in terms of resistivity?
2.Define insulators in terms of resistivity?
3.Define semiconductors in terms of resistivity?
4.Define temperature coefficient of resistance?
5.What are the changes observed at transition temperature?
6.State kirchoffs 1 law in current electricity?
7.State kirchoffs 2 law in current electricity?
8.Define mobility?
9.Explain equivalent resistance of resistor connected in series?
10. Explain equivalent resistance of resistor connected in parallel?
11. Define drift velocity?
12. Define faradays 1 law?
13. Define faradays 2 law?
14. Define wattmeter?
15.Electric energy and electric power?
5-MARKS
1.Explain kirchoffs 2 law and it expression?
2.State and verify faradays 2 law of electerolysis?
3.Explain the reaction of voltaic cell?
4. Explain the reaction of lead acid accumulator cell?
5.Explain wheatstones bridge and derive expression for bridge balance?
6.Explain the principle of potentiometer .how can emf of two cells be copared using potentiometer?
7.Explain about superconductivity?

1 comment: