1 )
If 60 capacitors, each of capacitance C are connected in series and then in
parallel . So what would be the ratio of
Cs/Cp ?
A ) 1 , B
) 60 ,
C ) 1/60 , D
) 1/3600 ,
Correct
Answer : - D ) 1/3600 ,
Solution
: -
2 )
When a capacitor is fully charged , then current ………….
flow .
A ) will , B
) will not ,
C ) may or may not , D ) None of these ,
Correct
Answer : - B ) will not ,
3 )
( Water ) ………… can not be used as dielectric in capacitor .
4 )
Some charge is given to a conductor . Then its potential remains same throughout
the conductor .
5 )
The capacitance of capacitors are of ratio of 1 : 2 : 3 , their equivalent capacitance in parallel is
greater than their equivalent capacitance in series by 60/11 .
Calculate their individual capacitance ?
A ) 0 , B
) 1 ,
C ) 2 , D
) 3 ,
Correct
Answer : - B ) 1 ,
Solution
: -
Lets we have 3 capacitors : - 1C , 2C
, 3C .
And we have to find value of C .
Formula
: -
For parallel : -
Cp = 1C + 2C +3C = 6C ,
For series : -
Ø (1/Cs) = (1/1C) + (1/2C) + (1/3C) ,
Ø (1/Cs) = (11 / 6C) ,
Ø Cs = 6C/11
,
So as given in question : - their equivalent capacitance in parallel is
greater than their equivalent capacitance in series by 60/11 :-
Ø Cp =
(60/11) + Cs ,
Ø 6C = (60/11) +
6C/11 ,
Ø 6C =
(60 + 6C) / 11 ,
Ø 6C * 11 = 60 + 6C ,
Ø 66C
= 60 + 6C ,
Ø 66C
- 6C =
60 ,
Ø 60C = 60
,
Ø C = 1
(individual capacitance) , Answer
.
6 ) Two
capacitor of equivalent capacitance
C ,when connected in series have
net capacitance of C1 and when connected
in parallel have net capacitance of C2 . What is value of C1/C2 ?
A ) 2 , B
) 4 ,
C ) 8 , D
) 12 ,
Correct
Answer : - B ) 4 ,
Solution
: -
Formulas
: -
For parallel : -
C1 = C + C = 2C ,
For series : -
Ø (1/C2) = (1/C) + (1/C) ,
Ø (1/C2) = (2/C) ,
Ø C2 = C/2
,
So C1/C2
= 2C / (C/2) = 4C /
C =
4 , Answer .
Now go to online quiz section and Physics Quiz 5 is uploaded related to these mcqs , so check your preparation by this link : -
