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Magnetism and Electromagnetism

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

120 mA
12 mA
16 mA
1.7 mA

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

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

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

zero
decreased
increased
reversed in polarity

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Magnetism and Electromagnetism
What will be the current passing through the ring shaped air cored coil when number of turns is 800 and ampere turns are 3200?

4
6
8
12

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Magnetism and Electromagnetism
The main constituent of permalloy is

Nickel
Cobalt
Tungsten
Chromium

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Magnetism and Electromagnetism
For a given wirewound core, an increase in current through the coil

increases the flux density
reverses the flux lines
decreases the flux density
causes no change in flux density

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MORE MCQ ON Magnetism and Electromagnetism

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