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How can a polarity of an electromagnet be determined if the direction of current flow is known?
The polarity of an electromagnet can be determined by the right-hand rule. If the direction of the current flow is known, curl your right hand fingers in the direction of the current flow. Your thumb points in the direction of the north pole of the electromagnet.
How can one determine the direction of velocity?
The direction of velocity can be determined by looking at the motion of an object in relation to a reference point. Velocity is a vector quantity that includes both speed and direction. The direction of velocity is indicated by the direction in which an object is moving, whether it is moving forward, backward, left, right, up, or down.
How is a magnetic field around a straight piece of wire?
When current flows through a straight wire, a magnetic field is generated around the wire. The direction of the magnetic field can be determined using the right-hand rule: if you wrap your right hand around the wire with your thumb pointing in the direction of the current flow, your fingers will curl in the direction of the magnetic field lines.
A magnetic field exists around a wire whenever?
a current flows through it. The magnetic field is created due to the movement of charged particles (electrons) in the wire. The direction of the magnetic field is determined by the right-hand rule.
How is the direction of the magnetic field determined using the electromagnetic wave right hand rule?
The direction of the magnetic field in an electromagnetic wave is determined using the right-hand rule. Point your thumb in the direction of the wave's propagation (movement), your fingers will curl in the direction of the electric field, and your palm will face the direction of the magnetic field.
Why is galvanometer used when you know that electric current travels from cathode to anode of the battery?
I think that you talk about the usage of galvanometer in photoelectric emission experiment. Right? The main purpose of using a galvanometer is to know about whether current flows or not and also the direction in which current flows. Moreover current flows right from anode to cathode and electrons do flow from cathode to anode within the discharge tube.
How can one determine the direction of magnetic force?
The direction of magnetic force can be determined using the right-hand rule. Point your right thumb in the direction of the current or movement of the charged particle, then curl your fingers. The direction your fingers point represents the direction of the magnetic force.
Suppose that you're facing a straight current-carrying conductor and the current is flowing toward you. The lines of magnetic force at any point in the magnetic field will act in?
A clockwise direction
What is the magnetic field around a wire when the current running in the wire is in reverse direction?
The magnetic field around a wire is determined by the direction of the current flow. If the current running in the wire is in the reverse direction, the magnetic field around the wire will also be reversed. The direction of the magnetic field is determined by the right-hand rule, where if you wrap your right hand around the wire with your thumb pointing in the direction of the current, your fingers will point in the direction of the magnetic field.
What direction is left bank and right bank labled from 1973 AMC 304?
Left and right on any car is determined from sitting in the drivers seat.
When a current flows through a wire what direction around the wire does the magnetic field flow?
When a constant current flows in a long straight wire, the magnetic field lines form circles around the wire. The direction of the magnetic field may be determined by the "right hand rule." If you position your right hand so the thumb points in the same direction as the current flows, then curling the fingers produces the approximate shape of a circle and the direction that your fingers point is the same direction as the magnetic field lines point in the circles that the field lines form. This is true inside and outside the wire. The field strength gets smaller the further away from the wire that you are and it also gets smaller as you go towards the center of the fire. It is a maximum at the surface of the wire. Caveat: The above description is exact only for infinitely long wires, but it is also very accurate for long wires where the straight stretch of wire is perhaps a hundred times longer than the wire is wide and no other part of the wire is very close.
How may the direction of current flow in an armature be determined?
Just like reading a book. Left to right, up to down.
