Electronic Principles
One henry of inductance is defined as:

the number of turns of wire in an inductor multiplied by the amount of current flowing through it
the amount of inductance required to change the frequency of a current by 1 Hz
None of these
the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second
the amount of counter emf required to reduce a current to 1 A

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Electronic Principles
Which one of the following statements is true for current flowing in a series circuit?

The same current flows through every part of a series circuit
The amount of current flow through each part of a series circuit can be different, depending on the resistance of each part and the amount of voltage applied to it
None of these
The total current in a series circuit is equal to the total voltage multiplied by the total resistance
The total current in a series circuit is equal to the sum of the currents flowing through the individual components in the circuit

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Electronic Principles
The total capacitive reactance of a parallel capacitor circuit is:

less than the capacitance value of the smallest capacitor
equal to the source voltage divided by total current
equal to the sum of the individual capacitance values
None of these
equal to the sum of the individual capacitive-reactance values

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Electronic Principles
The core of an electromagnet is said to be in saturation when:

the core is permitted to move freely within the coil
frequent changes in the direction of current through the coil causes heating effects in the core material
None of these
an increase in current through the coil causes no further increase in the mmf
changing the polarity of the current in the coil changes the polarity of the magnetic field around the core

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