why is ammeter connected in series and voltmeter in parallel? 

A voltmeter is used to measure the potential difference across two points in a circuit. Since, in parallel connection the voltage in the branches remains same, and also the resistance of the voltmeter is very high due to which a very small current flow through the voltmeter. So, it is connected in parallel to measure the voltage. 

An ammeter is used to measure the current flowing through a component/circuit. Since, current remains same in series connection and also the resistance of an ammeter is very small due to which it doesn’t affect the current to be measured. So, an ammeter is connected in series to measure current.

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ammeter is needed to determine the total current flowing through the circuit. if it is connected in parallel then all the current wont flow through it and it cant give actual current reading.. so ammeter is connected always in series.
a voltmeter is used to measure the potential diffrence betn two points which may be the two ends of a battery. so the connection of the voltmeter's two terminals should be touching the two ends of the battery or any resistance. in order to do so the voltmeter is always connected to the circuit in parallel..

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Because Voltage is the difference in potential between 2 points.So if you connected a voltmeter in series all you are doing is measuring the difference in potential across a strand of wire which will be zero (or very near). To measure voltage you connect the voltmeter in parallel so that you measure the voltage from the - to the + or the voltage drop across a load.
Amperes are the measure of how much electricity is actually moving through a wire. So to properly measure you must connect in series so that the actual current flows through the meter so it can be measured. Unless of course you have a clamp on ammeter in which case that is a whole nother ball game.

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Voltage is the difference in potential between two points. So, if you connected a voltmeter in series all you are doing is measuring the difference in potential across a strand of wire which will be zero (or very near to zero). To measure voltage you connect the voltmeter in parallel so that you measure the voltage from the negative to the positive or the voltage drop across a load. Also, voltmeter has high value of resistance causing potential drop across the circuit which is not required. Amperes are the measure of how much electricity is actually moving through a wire. So to properly measure you must connect in series so that the actual current flows through the meter and proper value of current are measured.


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ammeteris needed to determine the total current flowing through the circuit. if it is connected in parallel then all the current wont flow through it and it cant give actual current reading.. so ammeter is connected always in series.avoltmeteris used to measure the potential diffrence betn two points which may be the two ends of a battery. so the connection of the voltmeter 's two terminals should be touching the two ends of the battery or any resistance. in order to do so the voltmeter is always connected to the circuit in parallel.

hpoe it helps!!!...

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A voltmeteris used to measure the potential difference across two points in a circuit. Since, in parallel connection the voltage in the branches remains same, and also the resistance of the voltmeter is very high due to which a very small current flow through the voltmeter. So, it is connected in parallel to measure the voltage.

An ammeteris used to measure the current flowing through a component/circuit. Since, current remains same in series connection and also the resistance of an ammeter is very small due to which it doesnt affect the current to be measured. So, an ammeter is connected in series to measure current.

  • 11

A voltmeter is always connected in parallel because if it is connected in series, it will change the value of potential difference to be measured by minimising the current in the circuit as it has very large resistance and hence will give faulty reading. Connecting it in parallel will not change the value of potential difference being measured as the voltmeter will draw negligible current and hence give correct reading of potential difference.

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