Electronic Principles
Two diodes are in series. The first diode has a voltage of 0.75 V and the second has a voltage of 0.8 V. If the current through the first diode is 500 mA, what is the current through the second diode

10 mA
14 mA
12 mA
None of these
11 mA

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
What is the difference between the kinds of charges for an electron and a proton?

An electron has a positive charge and a proton has a negative charge
An electron has a negative charge and a proton has no charge
An electron has a positive charge and a proton has no charge
None of these
An electron has a negative charge and a proton has a positive charge

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
When applying a square waveform to a capacitor, the circuit tends to:

peak the current and round off the voltage waveforms
peak both the voltage and current waveforms
round off both the voltage and current waveforms
peak the voltage and round off the current waveforms
None of these

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of the following statements most accurately reflects the nature of ac power?

The current in an ac circuit flows in one direction, but changes value periodically
None of these
The current in an ac circuit changes direction periodically
The current in an ac circuit flows in two directions at the same time
The current in an ac circuit flows in one direction at a steady level

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of the following statements is true for the currents in a parallel RL circuit?

The total current is equal to the sum of the currents through the resistance and inductance
The total current leads the total voltage by less than 90
None of these
The current always has the same amplitude and phase for every part of the circuit
The total current is less than the sum of the currents through the resistance and inductance

ANSWER DOWNLOAD EXAMIANS APP