The energy stored in a magnetic field is given by ____________ where L=self-inductance and Rl=reluctance.(a) 1/2 Li^2(b) 1/2 (mmf*Rl)^2(c) 1/2∅Rl(d) 1/2 φ^2iThis question was addressed to me at a job interview.Asked question is from Singly Excited Magnetic Systems in portion Magnetic Circuits of Electrical Machines

The energy stored in a magnetic field is given by ____________ where L

1.	The energy stored in a magnetic field is given by ____________ where L=self-inductance and Rl=reluctance.(a) 1/2 Li^2(b) 1/2 (mmf*Rl)^2(c) 1/2∅Rl(d) 1/2 φ^2iThis question was addressed to me at a job interview.Asked question is from Singly Excited Magnetic Systems in portion Magnetic Circuits of Electrical Machines
Answer» RIGHT OPTION is (a) 1/2 Li^2 The EXPLANATION is: We KNOW that Wfld=1/2 φi and L=φ/i, THUS Wfld=1/2 Li^2.

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