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True or false The device that turns a needle in a galvanometer is called an electromagnet.?
True. An electromagnet is used in a galvanometer to create a magnetic field that interacts with the current-carrying coil and causes the needle to move.
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.
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 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.
What device can be used to determine the direction of the magnetic field in the electromagnet?
A compass can be used to determine the direction of the magnetic field in an electromagnet. The needle of the compass will align along the direction of the magnetic field lines produced by the electromagnet.
True or false The device that turns a needle in a galvanometer is called an electromagnet.?
True. An electromagnet is used in a galvanometer to create a magnetic field that interacts with the current-carrying coil and causes the needle to move.
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.
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 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.
What device can be used to determine the direction of the magnetic field in the electromagnet?
A compass can be used to determine the direction of the magnetic field in an electromagnet. The needle of the compass will align along the direction of the magnetic field lines produced by the electromagnet.
What can cause a galvanometer needle to move?
A galvanometer needle can be moved by the flow of electric current through its coil, the presence of a magnetic field, or mechanical disturbances like vibrations or shocks.
Why does an compass needle move when it is brought near an electromagnet?
A compass needle is a tiny magnet that aligns with the magnetic field around it. When brought near an electromagnet, the magnetic field produced by the electromagnet affects the compass needle, causing it to align with the new magnetic field created by the electromagnet.
What will happen if you put a compass next to an electromagnet that is switched?
the compass's needle will point at the electromagnet
Would a powerfull electromagnet lift a needle out of a haystack?
Only if the needle was made of iron or copper
Why needle of tangent galvanometer move by increasing and decreasing current?
The galvanometer is oriented so that the plane of the coil is vertical and aligned along parallel to the horizontal component He of the Earth's magnetic field (i.e. parallel to the local "magnetic meridian"). When an electrical current flow through the galvanometer coil, a second magnetic field H is created. At the center of the coil, where the compass needle is located, the coil's field is perpendicular to the plane of the coil. These two perpendicular magnetic fields add vertically, and the compass needle points along the direction of their resultant He + H. The current in the coil causes the compass needle to rotate by an angle\ \theta.
What is the use of spirit level in the tangent galvanometer?
A spirit level in a tangent galvanometer is used to ensure that the device is perfectly horizontal. This alignment is crucial for accurate measurements of the magnetic field and current, as any tilt can introduce errors in the readings. By leveling the galvanometer, the magnetic needle can respond correctly to the magnetic field produced by the current flowing through the coil. A proper setup ensures reliable and consistent results during experiments.
Is a electromagnet created when electric flows through a compass needle?
Yes
