During charging and discharging of the capacitor, there is a flow of charge from the battery towards the plates of the capacitor, which produces a conduction current in the circuit. Hence, the galvanometer present in the circuit
shows momentary deflection
.
Why galvanometer and ammeter is connected in series?
An ammeter is
always connected in series to a circuit
. Since Galvanometer is a very sensitive instrument therefore it can’t measure heavy currents. In order to convert a Galvanometer into an Ammeter, a very low resistance known as “shunt” resistance is connected in parallel to Galvanometer.
Why galvanometer is connected in series with high resistance while using it as a voltmeter?
A galvanometer can be converted into a voltmeter of given range by connecting a high resistance of suitable value in series with it, so that
most of the voltage applied drops across it
, enabling the galvanometer to measure much larger required voltage.
Why shunt is connected in series to galvanometer?
A shunt resistance is connected in parallel to the
galvanometer so as to keep the resistance low
. Such low resistance galvanometer is used in series with the circuit to measure the strength of current through the circuit.
When a galvanometer is connected in series with a multiplier it function as?
Conversion of a Galvanometer into a Voltmeter
A galvanometer can be converted into voltmeter by connecting a high resistance called multiplier in series to the galvanometer. This equation gives the value of
resistance R
, which connected in series to the galvanometer, is converted into a voltmeter of range 0 – V volts.
Is galvanometer connected in series?
The deflection of the coil is directly proportional to the current flow through it. The galvanometer is converted into the ammeter by connecting the resistance in parallel with the circuit. … It is connected in
series
with the circuit for determining the exact value of circuit current.
Which is better galvanometer or ammeter?
| Parameter Ammeter Galvanometer | Accuracy It is more accurate. It is less accurate. |
|---|
Does an ammeter have high resistance?
Answer and Explanation: 1 )
Resistance of an ammeter is low
. As ammeter is connected in series in the circuit, effective resistance is the sum of resistance of the circuit and the resistance of ammeter.
Do voltmeters have high internal resistance?
A
voltmeter should have a much larger resistance compared to any
circuit element across which it is connected because a low internal resistance voltmeter would draw a current from the circuit which changes the very voltage across the circuit element you are trying to determine.
Does a ammeter have resistance?
Electric currents are measured in Amperes (A), hence the name. The ammeter is usually connected in series with the circuit in which the current is to be measured. An
ammeter usually has low resistance
so that it does not cause a significant voltage drop in the circuit being measured.
What will happen if we connect galvanometer in parallel?
If it was put in parallel with the resistor to measure the current in it, you
could possibly damage the meter
; the low resistance of the ammeter would allow most of the current in the circuit to go through the galvanometer, and this current would be larger since the effective resistance is smaller.
Can shunt be connected in series?
A shunt resistance should be
connected in parallel to the galvanometer
so as to keep its resistance low. Such low resistance galvanometer ( ammeter) is used in series with the circuit to measure the strength of current through the circuit.
Why shunt is used in ammeter?
An ammeter shunt
creates a very low-resistance connection between two points in an electric circuit
. … Usually this shunt creates a voltage drop which allows an ammeter to be used to measure the amperage of a circuit.
What is the principle of galvanometer?
A moving coil galvanometer works on the principle that
a current-carrying coil placed in a magnetic field, experiences a torque
. The coil springs along with the radial field ensure the deflection to be proportional to the strength of the current.
Why do we convert galvanometer into voltmeter?
Galvanometers were the first instruments used to detect and measure electric currents. A galvanometer can be converted in to a voltmeter
by connecting a high resistance in series connection within it
. The scale is calibrated in volt. The value of the resistance connected in series decides the range of the voltmeter.
What is the effective resistance of this ammeter?
The effective resistance of an ideal ammeter should be
zero
because it should draw the entire current when it is connected in series in the circuit.
