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How is magnetic field made radial in a moving coil galvanometer?
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What is a moving iron galvanometer?
A moving iron galvanometer is used to intensify the magnetic field by reducing the length of air gap across which the magnetic flux has to pass.
Why tangent galvanometer is called tangent galvanometer?
because in tangent galvanometer earth magnetic field and magnetic field of magnet inside galvanometer are perpendicular to each other
What is the role of the soft iron core?
In a moving coil galvanometer, soft iron core intensifies the magnetic field through it. this causes maximum number of magnetic field lines to pass through the coil.
Why is phosphor- bronze wire used in moving coil galvanometer?
restoring torque is k theta the value of k depends upon the nature of the material used for suspension strip value of k is very small for quartz or phosphor bronze so in galvanometer phosphor bronze wire is used.
What energy transformation occurs in a galvanometer?
It transforms into a magnetic field.
What is a moving iron galvanometer?
A moving iron galvanometer is used to intensify the magnetic field by reducing the length of air gap across which the magnetic flux has to pass.
Why soft iron is placed in moving coil galvanometer?
1. to intensify the magnetic field by reducing the length of airgap across which the magnetic flux has to pass; 2. to give a radial magnetic flux of uniform density, thereby enabling the scale to be uniformly divided.
Why tangent galvanometer is called tangent galvanometer?
because in tangent galvanometer earth magnetic field and magnetic field of magnet inside galvanometer are perpendicular to each other
What is the importance of radial magnetic field in moving coil galvanometers?
To produce a constant torque on the coil
The fundamental concept behind the operation of a transformer is?
an electric current can produce a magnetic field. then,magnetic field within the core of wire will induced the voltage. so magnetic will produce from current at the galvanometer and magnet was far from galvanometer and it induces the voltage
What transformation occurs in a galvanometer?
It transforms into a magnetic field.
What is the role of the soft iron core?
In a moving coil galvanometer, soft iron core intensifies the magnetic field through it. this causes maximum number of magnetic field lines to pass through the coil.
Why is phosphor- bronze wire used in moving coil galvanometer?
restoring torque is k theta the value of k depends upon the nature of the material used for suspension strip value of k is very small for quartz or phosphor bronze so in galvanometer phosphor bronze wire is used.
What is galvanometer magnetic force and motor effect?
A motor effect is when magnetic flux lines interact with the current flow in the current conducting wire (a production of current means there is a production of a magnetic field, thus the magnetic field of a permanent magnet interacts with the magnetic field of the current), hence causing a motor effect, where electric energy is transformed into mechanical energy. In a galvanometer, the concept of the motor effect is used for it to detect and measure the magnitude of small electric currents as an instrument. A galvanometer uses radial magnets which cover more area of the rotor (this is where the needle is attached), as this rotor consists of an armature and loops of wire, it is perpendicular to the magnetic flux lines of the radial magnet. Therefore as the current flows through the coil, a magnetic field is produced, and the motor effect occurs allowing the needle to move on the scale.
What energy transformation occurs in a galvanometer?
It transforms into a magnetic field.
What energy transformation occurs in galvanometer?
It transforms into a magnetic field.
Why it is an advantage for armature to rotate in radial magnetic field rather than uniform?
1.maximum torque is experienced 2.torque is uniform for all positions of coil
