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If you add an ammeter at point B what current would it read when the switch is closed?
Wiki User
∙ 11y ago
All I know about the circuit is that there's a switch in it, and one point in it is labeled
' B ' in the drawing. Get that ? . . . the drawing. By that I mean the picture, figure,
sketch, or schematic that's printed next to the question wherever you copied it from.
With one momentary glance at that picture, all would be revealed and I have no doubt
that I could answer the question. But while the picture remains hidden, even the wisest
among my teachers is helpless and can speak no answer. That may give you some small
idea of how important the picture is.
Wiki User
∙ 11y ago
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Is a spiral a shape?
No, it is not a shape because it is not completely closed at any point of it.
What is a electrical circuit?
An electrical circuit is a path which electrons from a current source flow. Electric current flows in a closed path called an electric circuit. The point where those electrons enter an electrical circuit is called the "source" of electrons. The point where the electrons leave an electrical circuit is called the "return". The exit point is called the "return" because electrons always end up at the source when they complete the path of an electrical circuit. The part of an electrical circuit that is between the electrons' starting point and the point where they return to the source is called an electrical circuit's "load". ---Nerd
What is the meaning of closed flash point?
when the liquid remain close in thwe container ,it will having better flash point
Why is the closed switch symbol the same as the wire?
It is not the same as the wire. If you are looking at a proper symbol you will find two small circles. One at the start of the symbol and one at the end of the circle. These circles represent connection point to the switch.See related links below. Page 1.
What neutral ground resistor?
Neutral Ground Resistor is using for minimizing the fault current of system. It is a resistor which connected between ground and neutral and increase the resisting path for fault current.
What will an ammeter show if the circuit is broken?
Zero. No current is flowing in an open circuit. The ammeter will display an amount of 0 amps because there is no longer any current once the circuit has been broken. An ammeter measures current.
How is an ammeter connected in a circuit?
Series connect it within the line of the circuit for which you are interested in measuring the current flow.More detailSince we measure the flow of current IN the circuit, the ammeter must be connected in series with the part of the circuit for which you are interested in measuring the current flow.One of the ammeter's terminals must be connected to a point of the incoming current flow and its second terminal must be connected to the point of on-going current flow. To do this, cut the relevant circuit wire and connect one terminal of the ammeter to each end of the cut.
Where is the best place to put an ammeter in the circuit to measure the current going through the light bulb?
Since (by Kirchoff's current law) the current in a series circuit is the same at every point in the series circuit, it does not matter where you place the ammeter.
Can a multimeter be used as substitute of ammeter and voltmeter why?
yes it can read both ac and dc voltage and current .AnswerThe whole point of a multimeter is that it can perform the function of an ammeter, a voltmeter, and an ohmmeter!
When measuring current always place any type of meter in series with the circuit--is this true?
No. While it is true that one can measure current at any point in a circuit by breaking the circuit at that point and inserting the meter, not any meter will do it. One must use an ammeter to measure current.
What does it mean when the circuit is opened?
Its means there is no continuity between point Ato point B. Ex. A light switch : When the switch is off it opens the circuit and electricity does not get to the light, when the switch is on the circuit is closed and the light will turn on.
List two important things to remember when using an ammeter?
Make sure it is placed in the circut series so you can measure the electrical current at a specific point.
What are the advantages and disadvantages of crossbar switch?
Disadvantages are : 1.The crossbar switch is singled-layered switch. 2.At each point,there is a switch when closed,connects one of the inputs to one of the outputs.
Is it possible to use a switch to turn off only one bulb in a series circuit?
No. In a series circuit, current is the same, by Kirchoff's current law, at every point in the circuit, so you either have current at every point, or you have no current at every point.
How do you connect and ammeter and voltmeter?
Ammeter-Series Voltmeter-Parallel My teacher used to say this at class to make us remember this..... It is this word called VPAS (spelled as 'we pass'), where V denotes Voltmeter, P denotes Parallel, A denotes Ammeter and S denotes Series....... The reason is that, Current gets divided at the nodes while voltage gets divided across a series of resistive loads...... That's why we connect ammeter in series so that we don't divide the current when we're actually measuring the amount of current in the loop and likewise voltmeter in parallel, since voltage remains the same even when the loop splits at a point........
Why is an ammeter is always connected in series with the circuit?
When considering electricity, Current (measured in Amps) is often considered the flow of energy. The force behind the flow is the Volts. While the volts can be measured between any two points in the circuit (open, or closed), measuring the current, or flow of energy typically requires interrupting the flow. Somewhat like water. One can measure pressure of the water on a branch, but one must have a way to monitor the actual flow to determine how much water has passed. There are "exceptions" though. If you have an AC circuit, then an inductive ammeter can measure the amps around a single leg if the circuit without being installed inline with the circuit. Even with a DC circuit, it may be desirable to design a bypass or shunt circuit so that the majority of the current bypasses the ammeter, and only a small amount of the current actually flows through the ammeter.
Why high resistances are not used in wheatstone bridge?
Because if high resistance is like kilo mega ohm is used , corresponding current through the balanced point is in the order of micro ampere, so you have to use micro ampere sensitive ammeter , otherwise normal ammeter always show zero reading
