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1) A circuit has self inductance of 1 henry and carries a current of 2A. To prevent sparking when the circuit is switched off, a capacitor which can withstand 400V is used. The least capacitane of the capacitor connected across the switch must be equal to A) 50 micro farad B) 25 micro farad C) 100 micro farad D) 12.5 micro farad 2)Two coils of self inductances L1 and L2 are placed so close to each other that the effective flux of one coil is completely linked with the other. Than, the mutual inductance M between them is given by A) (L1L2) 1/2 B) L1 - L2 C) L1/L2 D) L1 + L2 3) An electric potential difference will be induced b/w the ends of the conductor shown in the figure when the conductor moves in the direction A) P B) Q C) L D) M Plz give detailed replies, rates assured...


1) A circuit has self inductance of 1 henry and carries a current of 2A. To prevent sparking when the circuit is switched off, a capacitor which can withstand 400V is used. The least capacitane of the capacitor connected across the switch must be equal to
A) 50 micro farad
B) 25 micro farad
C) 100 micro farad
D) 12.5 micro farad
 
2)Two coils of self inductances L1 and L2 are placed so close to each other that the effective flux of one coil is completely linked with the other. Than, the mutual inductance M between them is given by
A) (L1L2)1/2
B) L1 - L2
C) L1/L2
D) L1 + L2
 
3) An electric potential difference will be induced b/w the ends of the conductor shown in the figure when the conductor moves in the direction
A) P
B) Q
C) L
D) M
  
Plz give detailed replies, rates assured...
 


Grade:upto college level

1 Answers

ROSHAN MUJEEB
askIITians Faculty 829 Points
9 months ago
option a, option a, and option c.the answers are obtained by applying direct formulae

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