The energy stored in a magnetic field is given by ____________, where L=self-inductance and Rl=reluctance.
A. 1/2 Li2
B. 1/2 (mmf*Rl)2
C. 1/2∅Rl
D. 1/2 φ2i
Answer:A
The energy stored in a magnetic field is given by ____________, where L=self-inductance and Rl=reluctance.
A. 1/2 Li2 B. 1/2 (mmf*Rl)2 C. 1/2∅Rl D. 1/2 φ2i
Explanation: We know that Wfld=1/2 φi and L=φ/i , thus Wfld=1/2 Li2.