Induced Voltage Of Coil In A Magnetic Field
Strings (SiPjAjk) = S7P3A32 Base Sequence = 12735 String Sequence = 12735 - 3 - 32
A coil having 100 turns is immersed in a magnetic field that is varing uniformly from 80 mWb (milliWeber) to 30 mWb in 2 seconds. Determine the induced voltage in the coil.
S7P3A32 (Force - Push).
Pj Problem of interest is of type force. Voltage problems are force problems
Change mWb to Wb:
So, 80 mWb = 10-3 x 80 Wb;
And 30 mWb = 10-3 x 30 Wb;
Faraday' Law for an N-turn coil:
Induced voltage e = -Ndφ/dt.
And magnetic field is varying uniformly
So, e = - [10-3x(80 -30)x102] /2 = -2.5 V.
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