MCQs

1. [2081 GIE ‘A’] A moving coil galvanometer has a resistance of  What is the value of shunt required to send 10% of main current through the galvanometer?            
   a. [latex]0.9\Omega[/latex]                                     
   b. [latex]90\Omega[/latex]                         
   c.  [latex]10\Omega[/latex]                        
   d. [latex]9\Omega[/latex]
2. [2080 ‘R’] Kirchhoff’s voltage law of electrical circuit is based on the principle of conservation of
   a. Charge
   b. Mass
   c. Energy
   d. Linear momentum
3. [2079 GIE ‘B’] To convert a galvanometer into ammeter
   a.    a high resistance should be connected in parallel to the galvanometer
   b.   a low resistance should be connected in parallel to the galvanometer
   c.    a high resistance should be connected in series to the galvanometer
   d.   a low resistance should be connected in series to the galvanometer
4. [2079 ‘O’] If specific resistance of a potentiometer wire is [latex]10^{-7}\ Omega m,[/latex] current flowing through it is 0.1 A and cross-sectional area of wire is [latex]10^{-6}\ m^2[/latex], then potential gradient will be,            
   a. [latex]10^{-2}\ V/m[/latex]                            
   b. [latex]10^{-4}\ V/m[/latex]                
   c. [latex]10^{-6}\ V/m[/latex]                
   d. [latex]10^{-8}\ V/m[/latex]

Answers

1.c

2.c

3.b

4.a