Your Results | Global Average | |
---|---|---|
Questions | 5 | 5 |
Correct | 0 | 3.29 |
Score | 0% | 66% |
Inductance is a factor in which of the following?
an AC circuit |
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batteries connected in serial |
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determining energy stored by a capacitor |
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a DC circuit |
Inductance is a property of an AC circuit (or a component in an AC circuit) that quantifies resistance to changes in current. The current in an AC circuit is continuously changing and inductive reactance (the opposition to change) depends both on the inductance of the circuit or component and the rate at which the current is changing.
What type of current flows in only one direction in a circuit?
alternating |
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series |
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direct |
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parallel |
Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive. A common source of direct current (DC) is a battery.
Resistance and current are __________ proportional.
directly |
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exponentially |
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not |
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inversely |
Resistance is opposition to the flow of current and is measured in ohms (Ω). One ohm is defined as the amount of resistance that will allow one ampere of current to flow if one volt of voltage is applied. As resistance increases, current decreases as resistance and current are inversely proportional.
You would measure the amount of resistance at a certain point in a circuit with a(n):
ohmmeter |
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ammeter |
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potentiometer |
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voltmeter |
Resistance is opposition to the flow of current and is measured in ohms (Ω). An ohmmeter is used to measure the amount of resistance at a certain point in a circuit.
Which of the following is not a terminal on a transistor?
base |
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emitter |
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collector |
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input |
A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor.