Exam 3: Ohms Law, Energy, and Power

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    \text { Figure } 3 < 1  -If voltage is  12 V  and the resistance is color-coded brown-black-orange in Figure  3-1 , what are the minimum and maximum possible currents?  Figure 3<1\text { Figure } 3 < 1 -If voltage is 12 V and the resistance is color-coded brown-black-orange in Figure 3-1 , what are the minimum and maximum possible currents?

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Typically,Which is the first type of measurement taken in a known defective circuit?

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If a circuitʹs resistance increases, its current decreases.

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The symbol for a certain amount of energy used over time is ________.

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Power as it is used in electric circuits can be best defined as:

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    \text { Figure } 3 < 1  -If  V=50 V  and  R=25  \mathrm { k } \Omega    in Figure  3-1 , the current equals_________  Figure 3<1\text { Figure } 3 < 1 -If V=50 V and R=25 kΩ\mathrm { k } \Omega in Figure 3-1 , the current equals_________

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If a 47 kak \mathrm { a } resistor carries 5 mA , it's safe to use a 1 W resistor.

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If a resistance of 2.2 If a resistance of  2.2    is connected across a  1 kV source, current equals about_______ is connected across a 1 kV source, current equals about_______

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    \text { Figure } 3 < 1  -If  V=12 V and a  12  \mathrm { k } \Omega   resistor shorts in Figure  3-1 , the current is________  Figure 3<1\text { Figure } 3 < 1 -If V=12 V and a 12 kΩ\mathrm { k } \Omega resistor shorts in Figure 3-1 , the current is________

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The voltage of a power supply drops to 0 V when connected to a lamp circuit.What is a possible problem?

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Which is the correct formula for Ohmʹs Law?

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A 250 μA current flowing through a 4.7 kΩ resistor produces a ________ voltage drop.

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A 220 Ω\Omega 1/2 W resistor has burned open, so you look in your parts box to find a replacement. Which one of the following resistors could you use to repair the circuit?

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    \text { Figure } 3 < 1  -If the resistor opens in Figure 3-1, the ________.  Figure 3<1\text { Figure } 3 < 1 -If the resistor opens in Figure 3-1, the ________.

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    \text { Figure } 3 < 1  -If  I=64 mA  and  R=470  in Figure  3-1 , the voltage equals_________  Figure 3<1\text { Figure } 3 < 1 -If I=64 mA and R=470    \text { Figure } 3 < 1  -If  I=64 mA  and  R=470  in Figure  3-1 , the voltage equals_________ in Figure 3-1 , the voltage equals_________

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    \text { Figure } 3 < 1  -If V=12 V  and a  12  \mathrm { k } \Omega  resistor were to open in Figure  3-1 , the current is  resistor were to open in Figure  3-1 , the current is_____  Figure 3<1\text { Figure } 3 < 1 -If V=12 V and a 12 kΩ\mathrm { k } \Omega resistor were to open in Figure 3-1 , the current is resistor were to open in Figure 3-1 , the current is_____

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If the current flow for a given circuit has doubled, then the ________ has been halved.

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If the voltage applied to a circuit doubles, then power dissipation doubles.

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According to Ohmʹs Law, if resistanceW ere to decreaseW hile voltage remained the same, current would

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If a resistor that is color coded yellow-violet-red is placed across a 25 V source voltage, what value resistor and wattage rating could be used?

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