Electronic Principles
If a load resistance is 1 kW, a stiff current source has a resistance of

At least 10 Ohm
Less than 10 Ohm
None of these
More than 100 k Ohm
Less than 100 k Ohm

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

The total current in a series circuit is equal to the sum of the currents flowing through the individual components in the circuit
The total current in a series circuit is equal to the total voltage multiplied by the total resistance
None of these
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

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Electronic Principles
Which one of the following phrases best describes residual magnetism?

The circular magnetic field that surrounds a conductor carrying a current
The force of attraction between the poles of a permanent and temporary magnetic field
Magnetism that remains in the core of an electromagnet after the current through the coil is turned off
The amount of magnetic flux that is not confined to the core material of an electromagnet
None of these

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