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What happens to the ammeter reading when a lamp is added to a circuit which contains two cells and a lamp in series?
Wiki User
∙ 13y ago
Assuming the new lamp is in series, the ammeter reading falls because the total resistance has increased. By how much depends on how the lamp resistance depends on voltage. If the lamp is added in parallel to the first, then the ammeter reading doubles.
Wiki User
∙ 13y ago
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Why does every ammeter in a circuit have the same reading?
If you're connecting it properly, then I would have to guess that the multimeter is defective.
What is voltage reading on circuit with 6 volt battery 1 ammeter 1 50 ohm resistor?
i=v/r can be used to it
How do you connect a shunt resistor to a DC circuit to measure current?
To measure the current in a DC circuit an ammeter may be used. This ammeter may consist of a sensitive meter with a shunt in parallel with it to divert part of the current. In case even more current is expected than the full scale reading of the meter an additional shunt may be connected in parallel with that arrangement.
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.
How do you connect more than one ammeter to a circuit?
Two ways to connect an ammeter, You can use a direct reading type, by connecting the ammeter in series with the load. You can use a current transformer type or CT. The current transformer looks like a wire wrapped donut with two terminals on its side with a hole through the middle. you pass the wire carrying the load through the center. Connect the direct reading meter to the two terminals. A CT type meter allows you to measure higher currents.
What happens to the ammeter reading if resistor is removed?
Opening any circuit will stop the current from flowing.
What happens to an ammeter when there is a break in a circuit?
An ammeter reads the current that is flowing through a branch of a circuit. If there is a break within that same branch of the circuit, current will not be able to flow through that branch of the circuit as it forms an incomplete loop, so the ammeter will read 0 A of current. If there is a break in a circuit in a branch that is not connected to the ammeter however, the ammeter will give a higher reading of the current. This is assuming that the break in the other branch does not short out the branch with the ammeter attached, and that the circuit can still form a complete loop without that branch.
How do you calculate the ammeter reading?
The voltage remains the same across the circuit as it is a parallel connection. So, the current across the upper half of the circuit where the ammeter is connected is calculated as I = V/R = 12.04 (total voltage)/12 (Resistance R1) = 1 A. Hence, the ammeter will read 1 A.
What happens when a bulb ammeter battery and switch are put connected together?
the bulb will glow and ammeter will show the reading
The rules of connecting voltmeter and ammeters in the circuit?
Connect ammeter in series and voltmeter in parallel to the circuit
What does the reading on a ammeter say when the switch is open?
An open switch in a circuit will stop all current flow so the ammeter should read zero amps.
Why does every ammeter in a circuit have the same reading?
If you're connecting it properly, then I would have to guess that the multimeter is defective.
How would you connect an ammeter if you want to measure the current coming through some device in a circuit?
HOW TO CONNECT AN AMMETER Always connect an ammeter in SERIES in a circuit. Always ensure that the ammeter has a higher reading range than the expected current load, including start-up spikes. An ammeter expected to read a steady current of 13A should have a max range of 20A.
How much current goes into the bulb if ammeter reading is 0.4?
The answer to this depends on where the ammeter is in the circuit. Assuming the ammeter is in series with the bulb and no other objects are attached, then the current is 0.4 Amps. Otherwise, your question is unanswerable without more information.
What happens to the reading on an ammeter if the value of a variable resistor is increased?
it explodes and burns everyone in the room.
How can an ammeter loading effect the circuit under test?
Since internal resistance of the ameter will increases the resistance of the circuit. Thus decreasing the current giving an errorenous reading.
What is voltage reading on circuit with 6 volt battery 1 ammeter 1 50 ohm resistor?
i=v/r can be used to it
