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Think of two different ways you could make a variable inductor. Explain/draw picture of each.

Think of two different ways you could make a variable inductor. Explain/draw picture of each.

Science   Advanced-Physics   
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Answer #1

Variable inductors formed by moving the magnetic core in and outside of the inductor windings. By this magnetic core we can adjust the inductance value. When we consider a ferrite core inductor , by moving its core inside and outside on which the coil is wounded , variable ferrite core inductor can be formed.

Method 1

Use resistances before the inductor

2. Method

Use magnetic core moving inside and out inductor coil.

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