0
The magnetic field in a moving coil galvanometer is made radial by surrounding the coil with a cylindrical magnetic core. When current flows through the coil, it creates a magnetic field perpendicular to the coil. This magnetic field interacts with the radial magnetic field of the core, causing a torque on the coil that deflects the pointer.
What else can I help you with?
What is a moving iron galvanometer?
A moving iron galvanometer is a type of electrical measuring instrument that uses a coil of wire and a movable iron needle to detect and measure electric currents. When current flows through the coil, it creates a magnetic field that moves the iron needle, which indicates the strength and direction of the current.
Why tangent galvanometer is called tangent galvanometer?
A tangent galvanometer is called so because it uses the tangent of the angle through which a magnetic needle is deflected to measure electric current. The horizontal component of the Earth’s magnetic field and a coil carrying current creates a magnetic field that deflects the needle, making it tangent to the circle of the coil.
Why is the cylindrical core of soft iron used in moving coil galvanometer?
A cylindrical core of soft iron is used in a moving coil galvanometer because soft iron has high magnetic permeability, meaning it enhances the magnetic field produced by the coil. This helps increase the sensitivity and responsiveness of the galvanometer to small currents passing through the coil.
Why radial magnetic field?
A radial magnetic field is often used in applications where the magnetic field needs to be concentrated in a particular area, such as in electric motors or generators. By having a radial magnetic field, the magnetic flux can be directed efficiently through the device and produce the desired output. Additionally, a radial magnetic field can minimize energy losses and improve the overall performance of the device.
What energy transformation occurs in galvanometer?
It transforms into a magnetic field.
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.
What is a moving iron galvanometer?
A moving iron galvanometer is a type of electrical measuring instrument that uses a coil of wire and a movable iron needle to detect and measure electric currents. When current flows through the coil, it creates a magnetic field that moves the iron needle, which indicates the strength and direction of the current.
What is the importance of radial magnetic field in moving coil galvanometers?
To produce a constant torque on the coil
Why tangent galvanometer is called tangent galvanometer?
A tangent galvanometer is called so because it uses the tangent of the angle through which a magnetic needle is deflected to measure electric current. The horizontal component of the Earth’s magnetic field and a coil carrying current creates a magnetic field that deflects the needle, making it tangent to the circle of 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.
Why is the cylindrical core of soft iron used in moving coil galvanometer?
A cylindrical core of soft iron is used in a moving coil galvanometer because soft iron has high magnetic permeability, meaning it enhances the magnetic field produced by the coil. This helps increase the sensitivity and responsiveness of the galvanometer to small currents passing through the coil.
Why radial magnetic field?
A radial magnetic field is often used in applications where the magnetic field needs to be concentrated in a particular area, such as in electric motors or generators. By having a radial magnetic field, the magnetic flux can be directed efficiently through the device and produce the desired output. Additionally, a radial magnetic field can minimize energy losses and improve the overall performance of the device.
What energy transformation occurs in galvanometer?
It transforms into a magnetic field.
How does a galvanometer use a magnetic field to indicate the strength of an electric current?
A galvanometer consists of a coil of wire suspended in a magnetic field. When an electric current passes through the coil, it generates a magnetic field that interacts with the external magnetic field, causing the coil to move. The amount of deflection is proportional to the current strength, allowing the galvanometer to indicate the current passing through it.
What is the device that turns a needle in a galvanometer?
The device that turns a needle in a galvanometer is called a coil. The coil generates a magnetic field when current flows through it, which interacts with the magnetic field produced by the permanent magnet in the galvanometer to cause the needle to deflect.
Why is the core of a moving coil galvanometer made of soft iron?
The term galvanometer is used to refer to a meter which can measure small currents, usually in the mA (10-3A) or mA (10-6A) range. When a soft iron core is used, the magnetic field lines tend to crowd through the core. It is because soft iron core is ferromagnetic in nature. As a result, the strength of the magnetic field due to the field magnet increases, which in turn increases the sensitivity of the galvanometer.
