Electronic Principles
The knee voltage of a diode is approximately equal to the

Breakdown voltage
Applied voltage
None of these
Barrier potential
Forward voltage

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Electronic Principles
Which one of the following is a direct statement of Ohm's law?

The total resistance of a parallel circuit is less than the value of the smallest resistance
The algebraic sum of currents entering and leaving a point is equal to zero
The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it
None of these
The algebraic sum of voltages in a loop is equal to zero

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Electronic Principles
For a pure capacitor:

ac current lags the voltage by 90 degree
ac current and voltage are exactly in phase
None of these
ac current is converted to dc voltage
ac current leads the voltage by 90 degree

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