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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Tesla is a unit of

Flux density
Inductance
Flux
Field strength

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Magnetism and Electromagnetism
Materials subjected to rapid reversal of magnetism should have

High permeability and low hysteresis loss
High co-ercivity and low density
High co-ercivity and high retentivity
Large area of B-H loop

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Magnetism and Electromagnetism
The induced voltage across a stationary conductor in a stationary magnetic field is

zero
increased
decreased
reversed in polarity

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Magnetism and Electromagnetism
A permeable substance is one

through which the magnetic lines of force can pass very easily
which is a good conductor
which is a strong magnet
which is a bad conductor

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Magnetism and Electromagnetism
One telsa is equal to

1 Wb/m
1 Wb/mm²
1 Wb/m²
1 mWb/m²

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Magnetism and Electromagnetism
The susceptibility of paramagnetic materials generally lies between

KT3 and 1CT6
10"2 and KT5
1CT3 and 1CT7
KT4 and KT8

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