Electronic Principles
Suppose the zener diode has a breakdown voltage of 10 V and zener resistance of 8.5 W, what is the additional voltage when the current is 20 mA?

20 V
None of these
18.8 V
10.17 V
0.17 V

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

None of these
The total voltage is equal to the sum of the voltages across the resistance and capacitance
The total voltage is greater than the sum of the voltages across the resistance and capacitance
The voltage always has the same amplitude and phase for every part of the circuit
The total voltage is less than the sum of the voltages across the resistance and capacitance

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

None of these
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
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
The same current flows through every part of a series circuit

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Electronic Principles
One henry of inductance is defined as:

the amount of counter emf required to reduce a current to 1 A
None of these
the number of turns of wire in an inductor multiplied by the amount of current flowing through it
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 inductance required to change the frequency of a current by 1 Hz

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