you are here->home->Physics->Class 10->Ohm's Law
Ohm's Law
1)Which Law explains the following. At constant temperature the current flowing through a conductor is directly proportional to the potential difference between its ends.
  
2)The current through a wire depends on?
  
3)Which of the following is an example for Ohmic resistor?
  
4)What is reciprocal of resistivity called?
  
5)Which of the following statement does not represent Ohm's Law?
  
6)The work done in moving a unit positive charge across two points in an electric circuit is a measure of ___________.
  
7)The potential at a point is 20 V. The work done to bring a charge of 0.5 C from infinity to this point will be ________.
  
8)The device used for measuring potential difference is known as _____________.
  
9)The unit of resistivity is ____________. Answer: 3
  
10)The unit of current is _____________.
  
11)Two electric bulbs of 100 W, 200 V are put in series and the combination is supplied 100 V. The power consumption of each bulb will be
  
12)Ohm's law is not applicable to
  
13)Resistance of a wire is r ohms. The wire is stretched to double its length, then its resistance in ohms is
  
14)Resistivity of a wire depends on
  
15)Ohm's law is a relationship between
  
16)If current through a resistance is halved
  
17)Ohm's law describes the mathematical relationship between
  
18)If voltage across a resistance doubles
  
19)If the resistance in a circuit with constant voltage increases, the current will
  
20)If doubling the voltage across a resistor doubles the current through the resistor then