Question

An armature had 100 turns of wire and a cross-sectional area of 0.02 m2 . The armature is rotating at a frequency of 50.0 Hz to produce a peak emf of 6.0 V. Determine the magnetic field

Answer #1

**Solution:-**

Here we will use the formula to calculate the emf of an armature, RMS value of armature emf is given by:

Here,

As already given;-

Here

B- magnetic field

A-area

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