Magnetism and Electromagnetism What is the flux density when the flux is 5.5 Wb and the cross-sectional area is 6 × 10–3 m2? 9.7 T 917 T 91 T 91.7 T 9.7 T 917 T 91 T 91.7 T ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A magnetic field exists around Copper Moving Charges Iron Aluminium Copper Moving Charges Iron Aluminium ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Core of an electromagnet should have High susceptibility Both low coercivity and high susceptibility Low coercivity None of the listed here High susceptibility Both low coercivity and high susceptibility Low coercivity None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A permanent magnet Attracts ferromagnetic substances and repels all others Attracts all paramagnetic substances and repels others Attracts only ferromagnetic substances Attracts some substances and repels others Attracts ferromagnetic substances and repels all others Attracts all paramagnetic substances and repels others Attracts only ferromagnetic substances Attracts some substances and repels others ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The voltage induced across a certain coil is 200 mV. A 120 resistor is connected to the coil terminals. The induced current is 12 mA 16 mA 120 mA 1.7 mA 12 mA 16 mA 120 mA 1.7 mA ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Air gap has_______eluctance as compared to iron or steel path lower zero little higher lower zero little higher ANSWER DOWNLOAD EXAMIANS APP
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