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What total current flows through a parallel circuit with resistance elements of 2 4.3 and 7 ohms and has a potential difference of 30 volts?
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∙ 14y ago
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The total current flow through a parallel circuit is the sum of the individual current flows through each branch. Kirchoff's current law states that the signed sum of the currents at a node is zero. Stated another way, the sum of the currents entering a node is the same as the sum of the currents leaving the node.
Break the circuit into its component parts, a 2 ohm, a 4.3 ohm, and a 7 ohm resistor, in parallel. What do you know about these three resistors?
They all have a voltage of 30 volts.
Take Ohm's law, current equals voltage divided by resistance, and calculate the current through each resistor.
30 volts / 2 ohm's = 15 amperes.
30 volts / 4.3 ohms = 6.98 ampers.
30 volts / 7 ohms = 4.29 amperes.
The sum of the currents is 41.3 amperes.
Wiki User
∙ 14y ago
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Why potential difference is same for each capacitive connected in parallel combination?
Because it is simple phenomenon of electricity everything(resistance,capacitor,inductor) connected in parallel holds the same voltage across the each parallel element.
How should voltmeter be connected to measure the potential difference across a resistor - in series or in parallel?
In parallel.
When measuring the potential difference across a componet you need?
A voltmeter connected in parallel.
In a parallel circuit a parallel branch is usually called which current or resistance or voltage path?
A parallel branch is a current path. In general, current follows paths, voltage drops across components, and resistance is the voltage divided by current of specific circuit elements.
How can you calculate equivalent resistance of a series parallel resistance?
When two resistors are in series, you add the elements together. When two elements are in parallel you multiply them and divide that by the sum. ie: parallel elements 7 ohms and 8 ohms (8*7)/(8+7).If there are more than 2 in parallel however, just fill in this:1/Req=1/R1 + 1/R2 + 1/RNReq is the final answer of the equivalent resistance.Rn means you keep adding the reciprocal of the other resistors in parallel.
How do you connect parallel circuits?
A parallel circuit is realized by connecting two elements to the same nodes so the potential difference across their terminals can be the same.
Why potential difference is same for each capacitive connected in parallel combination?
Because it is simple phenomenon of electricity everything(resistance,capacitor,inductor) connected in parallel holds the same voltage across the each parallel element.
Which of the coil of the wattmeter has high resistance?
The voltage (or 'potential') coil has the higher resistance, because it is connected in parallel with the load.
How do you connect a voltmeter in parallel circuit?
A voltmeter is used to measure potential difference across two points in an electrical circuit . The voltmeter is connected in parallel across the circuit element (resistance ) so that its inclusion in the circuit has negligible effect on total resistance and current flowing in yhe circuit A voltmeter has high resistance,if connected in series it will increase of circuit and reduce the current in the circuit
Which of these is used to measure potential difference in parallel circuits?
voltmeter
How should voltmeter be connected to measure the potential difference across a resistor - in series or in parallel?
In parallel.
How is a voltmeter connected in the circuit to measure the potential difference between two points?
The voltmeter is connected in parallel between the two points whose potential difference is required.
Does more current flow through a parallel circuit than a series circuit?
Two resistors in parallel are equivalent to a single component with a lower resistance than either of the pair. Two resistors in series are equivalent to a single component with a resistance equal to the sum of the pair, therefore a higher resistance. For a given potential difference, more current in total will flow through two resistors in parallel than through the same resistors in series.
What is the difference between series and parallel circut?
If two or more circuit elements are connected in series, the current must pass through each of them in turn. If two or more circuit elements are connected in parallel, that means there is a "fork in the road". In this case, part of the current will pass through one element, and part, through another one.
When measuring the potential difference across a componet you need?
A voltmeter connected in parallel.
In a parallel circuit a parallel branch is usually called which current or resistance or voltage path?
A parallel branch is a current path. In general, current follows paths, voltage drops across components, and resistance is the voltage divided by current of specific circuit elements.
How can you calculate equivalent resistance of a series parallel resistance?
When two resistors are in series, you add the elements together. When two elements are in parallel you multiply them and divide that by the sum. ie: parallel elements 7 ohms and 8 ohms (8*7)/(8+7).If there are more than 2 in parallel however, just fill in this:1/Req=1/R1 + 1/R2 + 1/RNReq is the final answer of the equivalent resistance.Rn means you keep adding the reciprocal of the other resistors in parallel.
