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A galvanometer shows opposite deflection because the current flowing through it causes a magnetic field that interacts with the permanent magnet inside the galvanometer. The direction of the magnetic field determines the direction of deflection of the needle, resulting in opposite deflection depending on the direction of current flow.
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What is galvanometer constant and how to find it?
The galvanometer constant is the factor that relates the deflection of a galvanometer to the current passing through it. It is usually given as the current required to produce a unit deflection (such as one full-scale deflection) on the galvanometer. To find the galvanometer constant, you can pass a known current through the galvanometer and measure the corresponding deflection, then calculate the constant as the current divided by the deflection.
Does galvanometer have polarity?
No, a galvanometer does not have polarity. It is a device used to detect and measure small electric currents. The deflection of the needle in a galvanometer indicates the presence and direction of the current but not the polarity.
Why steady deflection comes in ballistic galvanometer?
Steady deflection in a ballistic galvanometer occurs because the coil has momentum when current is flowing through it. As the current is interrupted by a switch, the coil continues to rotate due to its inertia, resulting in a steady deflection. The deflection angle is directly proportional to the total charge that passed through the coil during the pulse of current.
Which circumstances would a current register on the galvanometer?
A current would register on a galvanometer when there is a flow of electric charge through the circuit that the galvanometer is connected to. The galvanometer measures the strength and direction of the current passing through it, displaying this information as a deflection on its dial.
What is weston galvanometer?
A weston galvanometer is a type of sensitive instrument used to detect and measure small electric currents. It uses a moving coil suspended in a magnetic field to deflect in response to the current passing through it. This deflection is then used to indicate the strength of the current.
What is galvanometer constant and how to find it?
The galvanometer constant is the factor that relates the deflection of a galvanometer to the current passing through it. It is usually given as the current required to produce a unit deflection (such as one full-scale deflection) on the galvanometer. To find the galvanometer constant, you can pass a known current through the galvanometer and measure the corresponding deflection, then calculate the constant as the current divided by the deflection.
What is a NULL Point of a galvanometer?
Its a point on the galvanometer where the galvanometer shows no deflection as no current passes through it.
What is definition of figure of merit of galvanometer?
It is the amount if current it takes for unit deflection in the given galvanometer. k = I/theta Where k is the figure of merit, I is the current supplied and Theta equals the number of divisions of deflection.
Does galvanometer have polarity?
No, a galvanometer does not have polarity. It is a device used to detect and measure small electric currents. The deflection of the needle in a galvanometer indicates the presence and direction of the current but not the polarity.
Why steady deflection comes in ballistic galvanometer?
Steady deflection in a ballistic galvanometer occurs because the coil has momentum when current is flowing through it. As the current is interrupted by a switch, the coil continues to rotate due to its inertia, resulting in a steady deflection. The deflection angle is directly proportional to the total charge that passed through the coil during the pulse of current.
Half deflection method to find galvanometer resistance?
We can find it by using wheatstone bridge.
Which circumstances would a current register on the galvanometer?
A current would register on a galvanometer when there is a flow of electric charge through the circuit that the galvanometer is connected to. The galvanometer measures the strength and direction of the current passing through it, displaying this information as a deflection on its dial.
What is weston galvanometer?
A weston galvanometer is a type of sensitive instrument used to detect and measure small electric currents. It uses a moving coil suspended in a magnetic field to deflect in response to the current passing through it. This deflection is then used to indicate the strength of the current.
What are the factors on which the figure of merit of galvanometer depends?
The figure of merit of a galvanometer depends on its sensitivity, which is the amount of deflection for a given current; its damping, which is how quickly the needle returns to zero position after being deflected; and its resistance, which affects the amount of current needed for deflection.
Why galvanometer show one side deflection in meter bridge experiment?
Well, honey, a galvanometer shows one-sided deflection in a meter bridge experiment because the galvanometer is connected in series with the unknown resistance being measured. The current flows through the galvanometer in one direction only, causing it to deflect to one side. It's just the way the cookie crumbles in the world of electrical measurements, sugar.
Steps in making a galvanometer?
Wind a coil of wire around a bobbin to create the coil, which will serve as the moving element of the galvanometer. Attach a pointer or index needle to the coil to indicate the deflection caused by the current passing through the coil. Place the coil and pointer assembly within a magnetic field produced by a permanent magnet to allow for the deflection of the pointer in response to current flow. Connect the coil to a calibrated scale to measure the amount of current based on the deflection of the pointer.
Why galvanometer called sensitive instrument?
A galvanometer is called a sensitive instrument because it is capable of detecting even small currents passing through it. Its design allows for precise measurement of small electrical currents, making it highly sensitive to changes in current flow.
