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MAGNETISM AND ELECTROMAGNETISM

Magnetism and Electromagnetism
The direction of a magnetic field within a magnet is

front to back
from north to south
from south to north
back to front

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Magnetism and Electromagnetism
When the north poles of two bar magnets are brought close together, there will be

a force of repulsion
a force of attraction
no force
a downward force

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Magnetism and Electromagnetism
The ability of a material to remain magnetized after removal of the magnetizing force is known as

retentivity
hysteresis
permeability
reluctance

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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
1.7 mA
120 mA
16 mA

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

increased
reversed in polarity
decreased
zero

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