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Electric Charges And Fields

Question

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How does the self-inductance of a coil change when an iron rod is introduced in the coil?

Solution

Since L ∝ μ_r , the self-inductance shall increase when an iron rod is introduced in the coil.

Some More Questions From Electric Charges and Fields Chapter

Figure shows tracks of three charged particles in a uniform electrostatic field. Give the signs of the three charges. Which particle has the highest charge to mass ratio?

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