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Today, 07:56

Give two factors that will increase the magnetic field strength of an electromagnet

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  1. Today, 09:01
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    Magnetic field caused by a current carrying conductor - electromagent - wrapped around a soft iron core. It has N uniformly wound turns over a length of L and carries a current of i amperes.

    n = N / L = number of turns per unit length

    Magnetic field strength = B = Mu n i Mu magnetic permeability

    To increase B, We may increase number of turns / unit length OR we can increase the current through the coil of the electromagnet.
  2. Today, 10:59
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    1). Increase the number of turns of wire in the coil around the magnetm 2). Increase the current through the wire in the coil.
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