a)Discuss how a voltmeter should be connected in a circuit so that the circuit, within experimental...

a)Discuss how a voltmeter should be connected in a circuit so that the circuit, within experimental uncertainties, remains unchanged. Explain why it does not affect the circuit when properly connected?

b)Discuss how an ammeter should be connected in a circuit so that the circuit, within experimental uncertainties, remains unchanged. Explain why it does not affect the circuit when properly connected?

c)Discuss how the voltage changes when resistors are connected in series?

d)Discuss how the current changes when resistors are connected in series?

Answer each question and do not just copy paste information from websites, person who does this the best will receive 1050 points !

Expert Solution

Voltmeters

A voltmeter is an instrument that measures the difference in electrical potential between two points in an electric circuit. An analog voltmeter moves a pointer across a scale in proportion to the circuit's voltage; a digital voltmeter provides a numerical display. Any measurement that can be converted to voltage can be displayed on a meter that is properly calibrated; such measurements include pressure, temperature, and flow.

In order for a voltmeter to measure a device's voltage, it must be connected in parallel to that device . This is necessary because objects in parallel experience the same potential difference.

Ammeters

An ammeter measures the electric current in a circuit. The name is derived from the name for the SI unit for electric current, amperes (A).

In order for an ammeter to measure a device's current, it must be connected in series to that device . This is necessary because objects in series experience the same current. They must not be connected to a voltage source -- ammeters are designed to work under a minimal burden, (which refers to the voltage drop across the ammeter, typically a small fraction of a volt).

genius_generous answered 5 months ago

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