With two currents flowing in opposite directions you can determine that the magnetic fields are in the same direction and will therefore repel.
When the currents flow in the same direction the magnetic field will be opposite and the wires will attract.
How does current affect magnetic field?
Current is directly proportional to magnetic force for a straight current carrying conductor in a uniform magnetic field
. So the force is directly proportional to the size of the current. Practically this means the following: If the current is doubled the force on the conductor will double.
Can current travel through magnetic field?
A current traveling through a loop of wire creates a magnetic field along the axis of the loop
. The direction of the field inside the loop can be found by curling the fingers of the right hand in the direction of the current through the loop; the thumb then points in the direction of the magnetic field.
Can electricity flow both ways?
No, you cannot have multiple currents flowing in different directions in the same wire
because all real wires have resistance. It will lead to inconsistencies with respect to other considerations, such as power dissipation.
Are the two currents in the same direction or in opposite directions?
The direction is obtained from the right hand rule. Note that
two wires carrying current in the same direction attract each other, and they repel if the currents are opposite in direction
.
Can magnetic field cancel each other?
Magnetic fields can cancel each other out
. This is owed to the factor that magnetic fields are vector quantities.
What is Fleming’s left hand rule?
Fleming’s Left Hand Rule states that if we arrange our thumb, forefinger and middle finger of the left hand perpendicular to each other, then the thumb points towards the direction of the magnetic force, the forefinger points towards the direction of the magnetic field and the middle finger points towards the direction …
Does DC current produce electric field?
DC electricity produces static electric and magnetic fields
, but these fields have very different properties from AC Electric Magnetic Fields (EMF*). For example, because the EMF from AC lines are time varying, they can induce currents and voltages in nearby conductive objects.
Why is current induced?
A current can be induced in a conducting loop
if it is exposed to a changing magnetic field
. A current can be induced in a conducting loop if it is exposed to a changing magnetic field.
What happens when a current carrying straight conductor direction of the current is reversed?
(i) On reversing the direction of current,
the conductor gets deflected in the upward direction
. i.e., the direction of conductor reverses. (ii) If the magnitude of current is doubled, it will result in doubling the magnitude of the force.
How does the direction of current affects the magnetic force?
The current will flow in the direction the thumb is pointing, and the magnetic field direction will be described by the direction of the fingers. This means
when you change the direction of the current, you also change the direction of the magnetic field
.
How do you determine the direction of current in a magnetic field?
Which direction does DC current flow?
Current direction
Electrons flow from negative to positive. In a direct current (DC) circuit, current flows in
one direction only
, and one pole is always negative and the other pole is always positive.
Can current cancel each other?
Currents can only flow in one direction jn a single conductor. It flows towards the end that is more positive.
That end may be reversed, as with alternating current circuits (AC).., but no more than that
. Like they done know of each other; as for that to happen they must have different return.
Can current flow backwards through a battery?
Electric Currents in Batteries
We learned Ohm’s law, which told us that
electric current flows from a positive to a negative electric potential while the electrons move in the opposite direction
. Kirchhoff’s law taught us that there must be continuity in current; i.e., current cannot “disappear” from a system.
Why current in opposite direction repel each other?
The direction of magnetic field on the conductor is determined by Fleming’s right hand rule. Thus, gives us that
the direction of magnetic field turns out to be opposite to each other
. This results in repulsion of the conductors carrying current in opposite directions relatively and vice versa.
Do wires attract each other?
So
if you have two current-carrying, parallel wires with magnetic fields circling around them in the same direction, they will attract each other
, as shown in the tutorial; at the point at which their respective magnetic fields intersect, they are traveling in opposite directions, and opposites attract.
What happens when the current are in opposite direction?
So here, if you want to think about it little bit, or have a little bit of intuition, if the current’s going in the same direction they will attract, and if currents are going in opposite directions
they will repel each other
.
Are magnets forever?
Your permanent magnet should lose no more than 1% of its magnetic strength over a period of 100 years provided it is specified and cared for properly
. There are a few things that may cause your magnet to lose its strength: HEAT.
Do opposite magnetic fields cancel?
Outside the wires, the two magnetic fields from the two currents are in opposite directions so
they will tend to cancel each other
and the resulting or total magnetic field will be small. Q4 Explain why two parallel wires carrying currents in opposite directions repel each other.
Can magnetic fields combine?
Nearby magnets
When magnets are close together, with their fields overlapping, the fields combine to produce a resultant field which acts in one direction at any given point
.
Can radio waves affect magnetic field?
NO, it is not true
. Radio waves and other electromagnetic waves pass through magnetic fields with no interaction at all. The reason metal foil can block radio waves is that the metal has plenty of free electrons that do interact with radio waves. It’s not about a simple magnetic field.
What is the difference between Fleming’s LHR and RHR?
Fleming’s left-hand rule gives the direction of magnetic force acting on a conductor whereas Fleming’s right-hand rule is used to find the direction of induced current
.
What is Fleming right hand thumb rule?
Fleming’s right-hand rule
gives which direction the current flows
. The right hand is held with the thumb, index finger and middle finger mutually perpendicular to each other (at right angles), as shown in the diagram. The thumb is pointed in the direction of the motion of the conductor relative to the magnetic field.
Does current flow in the same direction as electric field?
In general the electric field and the current are not in the same direction
. Careful here. Th direction of Positive charge is defined by the direction of the field. That is the direction of the conventional current.
Can electric field cause current?
field. And
electric field causes current only in non-ideal conductors
(not superconductors).
Can AC current produce magnetic field?
AC magnetic field is generated when an alternating current is passing through a coil
. The AC current is a time-varying current and it is often a sine-wave. Thus, the magnetic is also time-varying.
