Question

Identify the numerical co-efficient of x-2xy+3y
$Identify \: the \: term \: containing \: y ^{2} and \: write \: the \: coefficient \: of \: 12x2y - 7xy ^{2} + 9y ^{2} x$
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Answer 1

Step-by-step explanation:

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student was performing an experiment using solenoid, a battery, ammeter, voltmeter, two coils and a cylindrical core. a) When will the magnetic field produced by a solenoid maximum?