What will be the effect of increase in the number in turns in the coil wrapped around a magnetic compass in fig .14.4 of th book?
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Theory
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In a piece of iron there are millions of tiny ‘atomic magnets’, they
are called this because in each atomic magnet there is a North and a
South Pole. In the piece of iron these tiny atomic magnets line up
with each other in small groups, when they do this they become
domains. In a piece of iron, that is unmagnetised, the domains will
all point in different directions, see diagram 1 below, the domains
are shown by small arrows, the arrowhead indicates the North Pole. As
all the domains are pointing in different directions there will be no
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In a piece of iron there are millions of tiny ‘atomic magnets’, they
are called this because in each atomic magnet there is a North and a
South Pole. In the piece of iron these tiny atomic magnets line up
with each other in small groups, when they do this they become
domains. In a piece of iron, that is unmagnetised, the domains will
all point in different directions, see diagram 1 below, the domains
are shown by small arrows, the arrowhead indicates the North Pole. As
all the domains are pointing in different directions there will be no
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