Magnetism and Electromagnetism What is the magneto-motive force in a 75-turn coil of wire when there are 4 A of current through it? 150 At 100 At 200 At 300 At 150 At 100 At 200 At 300 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism An electromagnetic field exists only when there is decreasing current voltage current an increasing current decreasing current voltage current an increasing current ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Indicate which of the following material does not retain magnetism permanently. None of the listed here Stainless steel Hardened steel Soft iron None of the listed here Stainless steel Hardened steel Soft iron ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Core of an electromagnet should have None of the listed here Low coercivity Both low coercivity and high susceptibility High susceptibility None of the listed here Low coercivity Both low coercivity and high susceptibility High susceptibility ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The retentivity of material is useful for the construction of Non-magnetic substances Electromagnets Permanent magnets Transformers Non-magnetic substances Electromagnets Permanent magnets Transformers ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Magnetic moment is a pole strength scalar quantity universal constant vector quantity pole strength scalar quantity universal constant vector quantity ANSWER DOWNLOAD EXAMIANS APP
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