AC concepts (to review)

Find the average value of current when the current that are equidistant are 4A, 5A and 6A.

• 5A

• 6A

• 10A

• 15A

In a sinusoidal wave, average current is always _______ rms current.

• Equal to

• Not related

• Less than

• Greater than

The Ohm's law (the equation is given) is valid for ................................. circuit/s

• Pure capacitive circuit

• Pure inductive  circuit

• Pure Resistive AC Circuit

• any circuit

1)What is the phase difference between voltage and current in a circuit including only a capacitor and an AC source? 2)Does current lag or lead a voltage?

• 1)180⁰

  ^{2) electric current leads voltage}

• ^{electric current lags the voltage by} 90⁰

• Phase difference =180⁰

  the voltage leads, the current lags

• Phase difference =90⁰

  Electric current leads, the voltage lags

What is the phase difference between voltage and current in a circuit including only a inductor and an AC source? Does current lag or lead a voltage?

• voltage leads the current by 90⁰

• current leads the voltage by 90⁰

• voltage leads the current by 180⁰

• voltage lags the current by 90⁰

Which circuit corresponds to this graph of electric current and voltage?

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Which circuit corresponds to this graph of electric current and voltage?

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Which circuit corresponds to this graph of electric current and voltage?

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The Ohm's law (the equation is given) is valid for ................................. circuit

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What are the equations of voltage, current and resistance in series connection?

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