How can a galvanometer be converted into a practical ammeter?
A galvanometer is converted into an ammeter by connecting a low resistance in parallel with the galvanometer. This low resistance is called shunt resistance S. The scale is now calibrated in ampere and the range of ammeter depends on the values of the shunt resistance.
How can a galvanometer be converted to a voltmeter practical?
Procedure
- Connect resistance box in series combination with the galvanometer and take the plugs of resistance R.
- A and B are the fixed terminals and C is the variable terminal of the rheostat.
- Now the galvanometer functions as a voltmeter of range V Volts.
What is a practical voltmeter?
A voltmeter is always connected in parallel to measure the voltmeter. If voltmeter internal resistance is low, then more current will divide through voltmeter and hence more voltage drop across the voltmeter. It causes errors in measurement.
How do you convert a galvanometer into ammeter why it is connected in series?
To convert a galvanometer into an ammeter we should connect (A) Low resistance in series (B) Low resistance in parallel (C) High resistance in series (D) High resistance in parallel. A galvanometer is converted into an ammeter by connecting it in parallel with a low resistance called shunt resistance.
What is galvanometer how it is converted into ammeter and voltmeter?
A galvanometer is converted into a voltmeter by connecting a high resistance ′R′ in series with it. A galvanometer is converted into ammeter by connecting a small resistance (called shunt) in parallel with it. Resistance of voltmeter, Rv=G+R. Resistance of Ammeter, RA=G+rGr.
How we can convert a galvanometer into ammeter and voltmeter along with their expression?
1 Answer
- A galvanometer is converted into a voltmeter by connecting a high resistance ‘R’ in series with it.
- A galvanometer is converted into an ammeter by connecting a small resistance (called shunt) in parallel with it.
- Resistance of voltmeter, RV = G + R.
How can we convert galvanometer into ammeter and voltmeter?
1 Answer
- A galvanometer is converted into a voltmeter by connecting a high resistance ‘R’ in series with it.
- A galvanometer is converted into an ammeter by connecting a small resistance (called shunt) in parallel with it.
- Resistance of voltmeter, RV = G + R.
What is the resistance of a practical voltmeter?
And that of voltmeter is infinity.. Because ammeter is always used in series to find out the current.. If it has resistance then overall resistance will increases and current will reduced.. So it must be zero.
What should be the internal resistance of a practical voltmeter?
The internal resistance of the ideal voltmeter is infinity since it should not allow any current to flow through the voltmeter. Voltmeter measures the potential difference, it is connected in parallel.
How can a galvanometer be converted into ammeter and find its resistance class 12?
An ammeter is made from a galvanometer. Or we can also say that a galvanometer can be converted into an ammeter. To convert a galvanometer into an ammeter, we connect a resistance R parallel to the galvanometer. This resistance is called shunt resistance.
How is resistance measured experimentally?
Experiment Title. The magnitude of resistance can be measured by different methods. One method is to measure the voltage drop V across a resistance n a circuit with a voltmeter and the current I through the resistance with an ammeter. Then using Ohm’s Law, R = V/I.
What are the internal resistances of a ideal ammeter and an ideal voltmeter?
The internal resistance of an ideal voltmeter is infinity and the internal resistance of an ideal ammeter is zero.
What is the ideal resistance of a voltmeter and ammeter?
Resistance of an ideal voltmeter is Infinite and that of an ammeter is zero. Was this answer helpful?
How do you convert galvanometer into voltmeter and ammeter explain?
A galvanometer can be converted into ammeter by connecting a low resistance called shunt in parallel to the galvanometer. A voltmeter is a device used to measure the potential difference between two points in a circuit.
How a moving coil galvanometer can be converted into ammeter and voltmeter?
So a moving coil galvanometer is converted into a voltmeter by connecting a high resistance in series with the galvanometer resistance.
How is a galvanometer converted into an ammeter and voltmeter?
A galvanometer is converted into a voltmeter by connecting a high resistance ‘R’ in series with it. A galvanometer is converted into an ammeter by connecting a small resistance (called shunt) in parallel with it.
What is the difference between a galvanometer and an ammeter?
• A galvanometer is always a mechanical device, whereas an ammeter can either be a mechanical device or an electronic device. • A galvanometer always requires a magnetic field, but an ammeter may or may not have a magnetic field.
Can we convert an ammeter into a galvanometer?
Yes we can convert an ammeter into a galvanometer. 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.
Can We Connect an ohmmeter to an ammeter?
We cant connect ohmmeter to any live circuit. We will get very small resistance reading in ohmmeter when connect to ammeter. Ammeter have very small resistance in parallel with ammeter coil resistance. So final resistance further very low. Volunteers are needed for a PicnicHealth research study.
What does an ammeter actually measure?
Moving-coil. Wire carrying current to be measured.