Questions and Answers
An ammeter is used to measure __________.
current
What is the unit of measurement for resistance?
Ohms
Which of the following statements is not true about measuring the resistance of a component that is connected in a circuit?
Current in a __________ circuit is divided among the branches of the circuit.
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As branches are added to a parallel circuit, the resistance __________.
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A(n) __________ circuit is one in which there is more than one path for current to travel.
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Voltage is a(n) electrical __________.
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The two ways to measure voltage are __________ and __________.
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A multimeter is a multipurpose device that can measure __________.
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To measure current through a component, the ammeter must be connected __________ the component.
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If a wire has continuity, it __________.
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Both analog and digital voltmeters measure __________.
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A(n) __________ is used to measure resistance.
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In a parallel circuit with a constant voltage power supply, the voltage drop across each branch is __________.
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10mA would be an example of __________ value.
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Study Notes
Electrical Measurements Overview
- An ammeter measures current in electrical circuits.
- The unit of measurement for resistance is ohms.
- Always ensure the power supply is off before measuring resistance to obtain accurate readings.
Circuit Types
- Current in a parallel circuit is divided among its branches.
- Adding more branches to a parallel circuit results in a decrease in resistance.
- A parallel circuit provides multiple paths for current flow.
Voltage Measurements
- Voltage represents the electrical force that drives current through a circuit.
- Two methods to measure voltage include measuring across a component and measuring from a reference point.
Multimeters and Measurement Techniques
- A multimeter can measure voltage, current, and resistance making it a versatile tool.
- To measure current through a component, connect the ammeter in series with that component.
- If a wire shows continuity, it indicates almost no resistance within it.
Voltmeters and Ohmmeters
- Both analog and digital voltmeters measure potential difference across components.
- An ohmmeter is specifically used to measure resistance in circuits.
Circuits and Voltage Drops
- In a parallel circuit with a constant voltage source, the voltage drop across each branch is equal to the power supply voltage.
- An example of a current value is 10mA.
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Description
Test your understanding of basic electrical measurements including current, voltage, and resistance. This quiz covers concepts related to ammeters, multimeters, parallel circuits, and safe measurement techniques.
