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Electronics and Communication Engineering - Networks Analysis and Synthesis - Discussion

Discussion Forum : Networks Analysis and Synthesis - Section 4 (Q.No. 35)
Networks Analysis and Synthesis
35.
In an air cored coil, a current of 0.7 A causes a flux of 5 x 10-6 Wb. If the core is made of cast iron and the coil is similar, the same current can set up a flux of about
5 x 10-6 Wb
5 x 10-8 Wb
10-2 Wb
5 x 10-4 Wb
Answer: Option
Explanation:

The permeability of cast iron is about 100.

Discussion:
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