1 ) To decrease the capacitance , we put capacitors in . . . . . . . . . . . . . , A ) series , B ) parallel , C ) both will show same capacitance , D ) None of these ,

1 ) To decrease the capacitance , we put capacitors in . . . . . . . . . . . . . ,

A ) series ,                                                                    B ) parallel ,

C ) both will show same capacitance ,                      D ) None of these ,

Correct Answer : -  A ) series ,  

 

2 ) If we increase the distance between two plates. of capacitor , the capacitance will : -

A ) increase ,                                            B ) decrease ,

C ) remain same ,                                     D ) None of these ,

Correct Answer : -   B ) decrease ,

Because C = k A E / d .  As by formula , capacitance is inversely related to distance . So , while increasing distance , capacitance will decrease .

 

3 ) A capacitor is charged with battery and then I is disconnected . A slab of dielectric is now inserted between plates : -

A ) then potential difference between the plates decreases ,

B )  stored energy decreases ,

C )  charge remains unchanged ,

D ) All of these .

Correct Answer : -  D ) All of these .

 

4 ) When dielectric is placed between the plates , the capacitance of capacitor will . . . . . . . . . . .

A ) increases ,                                                    B ) decrease ,

C ) remain same ,                                                        D ) None of these ,

Correct Answer : -   A ) increases ,    

 

5 ) In a charged capacitor , the energy is stored in the form of . . . . . . . . . . . between the plates .

A ) magnetic field ,                                                       B ) electric field ,

C ) both of these ,                                                        D ) None of these ,

Correct Answer : -   B ) electric field ,

 

6 ) Capacitance of parallel plates capacitor depends on separation between the plates .

 

7 ) If the distance between the plates of parallel plate capacitor of capacitance 10 u f is double , then new capacitance will be : -

A ) 5 u f ,                                                    B ) 10 u f ,

C ) 15 u f ,                                                 D ) None of these ,

Correct Answer : -   A ) 5 u f ,

C = A E˳ / d  ,

d' = 2 d ,

So  ,  C' = C / 2 = 10 u f / 2 ,

C' = 5 u f , Answer .

Now go to online quiz section and Physics Quiz 13 is uploaded related to these mcqs  , so check your preparation by this link : -

UG Online Quizzes