Electrostatics Question 532

Question: Four condensers each of capacity 4μF are connected . VPVQ=15volts . The energy stored in the system is [CPMT 1976, 89]

Options:

A) 2400 ergs

B) 1800 ergs

C) 3600 ergs

D) 5400 ergs

Show Answer

Answer:

Correct Answer: B

Solution:

Total capacitance of given system Ceq=85μF

U=12CeqV2=12×85×106×225=180×106J

=180×106×107erg=1800erg



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