The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current?

Electronic Principles
The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current?

14.8 ÂµA

7.8 ÂµA

None of these

7.75 ÂµA

10.3 ÂµA

14.8 ÂµA

7.8 ÂµA

None of these

7.75 ÂµA

10.3 ÂµA

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Electronic Principles
A power transformer steps 100 V down to 10 V. If the current in its primary winding is 2 A, what is the current in the secondary winding?

50 A

20 A

0.20833333333333

None of these

50 A

20 A

0.20833333333333

None of these

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Electronic Principles
Current and voltage are said to be in phase when:

they have the same amplitude and frequency

None of these

their waveforms cross through zero and reach positive and negative peaks at the same time

All of these

their waveforms are both ac or both dc

they have the same amplitude and frequency

None of these

their waveforms cross through zero and reach positive and negative peaks at the same time

All of these

their waveforms are both ac or both dc

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Electronic Principles
What causes the depletion layer?

Recombination

Barrier potential

Ions

Doping

None of these

Recombination

Barrier potential

Ions

Doping

None of these

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

The same current always flows through every part of a parallel circuit

The total current in a parallel circuit is equal to the total voltage multiplied by the total resistance

None of these

The total current in a parallel circuit is always less than the smallest amount of current

The amount of current flow through each branch of a parallel circuit can be different, depending on the resistance of each branch part and the amount of voltage applied to it

The same current always flows through every part of a parallel circuit

The total current in a parallel circuit is equal to the total voltage multiplied by the total resistance

None of these

The total current in a parallel circuit is always less than the smallest amount of current

The amount of current flow through each branch of a parallel circuit can be different, depending on the resistance of each branch part and the amount of voltage applied to it

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Electronic Principles
Which one of the following equations most directly determines the power dissipation of a resistance when you know the power dissipation of a resistance when you know the voltage drop and current?

P = E2/R

None of these

I = P/E

P = I2R

P = IE

P = E2/R

None of these

I = P/E

P = I2R

P = IE

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Electronic Principles

Electronic Principles The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current?

Electronic Principles A power transformer steps 100 V down to 10 V. If the current in its primary winding is 2 A, what is the current in the secondary winding?

Electronic Principles Current and voltage are said to be in phase when:

Electronic Principles What causes the depletion layer?

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

Electronic Principles Which one of the following equations most directly determines the power dissipation of a resistance when you know the power dissipation of a resistance when you know the voltage drop and current?

Electronic Principles
The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current?

Electronic Principles
A power transformer steps 100 V down to 10 V. If the current in its primary winding is 2 A, what is the current in the secondary winding?

Electronic Principles
Current and voltage are said to be in phase when:

Electronic Principles
What causes the depletion layer?

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

Electronic Principles
Which one of the following equations most directly determines the power dissipation of a resistance when you know the power dissipation of a resistance when you know the voltage drop and current?