Could a solenoid suspended by a string be used as a compass? D.C.
What happens to the compass needle as it is moved around the solenoid?
When magnetic compass with the north end is brought closer to the 1st end of the solenoid, the needle
deflects towards the west
, that is, away from the solenoid because the magnetic compass that is pointing in the direction of the earth’s magnetic field, i.e. north- south direction repels with the north pole of current …
What is the direction inside a solenoid?
If the direction of current is anti-clockwise, the end of the solenoid acts as a north pole and vice-versa.
Can a current carrying coil be used as a compass explain?
How might a loop of wire carrying a current be used as a compass can it be used as a compass to distinguish the north and south?
If one end of the wire aligns toward the earth’s geographic north, it will be the north pole of the wire and the south pole will be that end which aligns with the earth’s geographic south
. This way, such a current carrying wire can act as a compass and north and south directions can be distinguished.
How does a solenoid create a magnetic field?
A solenoid
[ nb 1 ]
is a coil wound into a tightly packed helix. In physics, the term solenoid refers to a long, thin loop of wire, often wrapped around a metallic core, which produces a magnetic field
when an electric current is passed through it
.
Is there magnetic field outside a solenoid?
Outside the solenoid,
the magnetic field is zero
.
How is magnetic field produced in a solenoid used?
→ A strong magnetic field produced inside a current-carrying solenoid can be used
to magnetise a piece of magnetic material like soft iron, by placing it inside the coil/ solenoid
(figure 13.17). The magnet so formed is called an electromagnet.
Why does a current carrying wire deflect a compass needle?
A current carrying conductor produces a magnetic field around it. This magnetic field interacts with the magnetic needle of compass, and thus the needle shows deflection
.
What happens if a wire carrying current is placed into a magnetic field?
When a current carrying conductor is placed on a magnetic field,
a mechanical force is exerted on the conductor which can make the conductor move
.
What happens to a compass needle kept near a current carrying wire?
The needle in the compass gets deflected
.
Can you use a compass to detect the currents in wires in the walls near light switches in your home?
A compass does not detect currents in wires near light switches
because… 1. The cable to the light switch contains two wires – one carrying current to the switch and one carrying current away from the switch. The net magnetic field is very small and would fall of rapidly with increasing distance.
When we bring a magnetic compass near a current carrying wire is deflects the magnetic needle of the compass t f?
Answer. When a magnetic compass is brought near a current carrying conductor the needle gets deflected
because of the magnetic field produced by the current carryung conductor
. It is so because a current carrying wire act as a magnet and we all know that the compaas get deflected if we bring a magnet near it.
What device can be used to determine the direction of the magnetic field in the electromagnet?
All Answers (6) In general, a device that measures the strength of a magnetic field is called
a magnetometer
.
How can a solenoid be converted into an electromagnet?
A solenoid is just a coil of wire, but
when you run a current through it
, it becomes an electromagnet. Stationary charges produce electric fields, but moving charges produce magnetic fields. This allows us to create an electromagnet by running a current through a wire.
Can a solenoid generate electricity?
A solenoid is a device comprised of a coil of wire, the housing and a moveable plunger (armature). When an electrical current is introduced, a magnetic field forms around the coil which draws the plunger in. More simply,
a solenoid converts electrical energy into mechanical work
.
How does a solenoid behave like a magnet?
The solenoid behaves like a magnet as
it has a soft iron core with insulated copper wire over it
. When a current is passed through the solenoid, a magnetic field is produced around it. The magnetic field produced is similar to the magnetic field of a bar magnet.
How can you make a magnetic field stronger around a solenoid?
- increasing the number of turns on the coil.
- increasing the current.
- placing an iron core inside the solenoid.
Where the magnetic field is strongest in solenoid?
Why is the magnetic field inside a solenoid stronger than outside?
As in the case of bar-magnets, the magnetic field is stronger inside the solenoid than outside it.
Magnetic field lines are closely packed inside the solenoid, and magnetic field is concentrated into a nearly uniform magnetic field inside the solenoid
. The magnetic fields outside are weak and spread out.
Can a freely suspended solenoid?
No, current carrying solenoid fall freely stay in North – South direction
because it behaves as a bar magnet. When current flow through a solenoid is reversed the it direction is also reversed.
What type of magnetic field is a solenoid?
A solenoid is a type of electromagnet whose intention is to produce a
controlled magnetic field
.
What are uses of solenoid?
The main use of solenoid is
as a switch for power
. They are used in inductors, valves, antennas, etc. Its application is in varied fields like medical, industrial use, locking systems, automotive, etc. It is used to control a valve electrically.
Does electricity effect a compass?
A: The compass needle moves from magnetic north to a position perpendicular to the wire. This investigation shows that
the compass needle is affected by the electricity moving through the circuit
.
Who discovered that a compass needle gets deflected when a current carrying conductor is placed near it?
Hans Christian Oersted
, one of the leading scientists of the 19
th
century, played a crucial role in understanding electromagnetism. In 1820 he accidentally discovered that a compass needle got deflected when an electric current passed through a metallic wire placed nearby.
Why does magnetic compass deflect?
When compass is brought near a bar magnet,
its magnetic field lines interact with that of the bar magnet
. Hence, a compass needle shows a deflection when brought near the bar magnet. Was this answer helpful?
What will happen if a current carrying conductor is placed in magnetic field How can the direction of magnetic field be found out?
A current carrying conductor placed in a magnetic field experiences a force.
If the direction of the field and that of current are mutually perpendicular to each other, then the force acting on the conductor will be perpendicular to both
and that can be determined using the Fleming’s left-hand rule.
Does insulated wire produces magnetic field?
So
insulation has nothing to do with producing of magnetic field by a current carrying conductor
.
Does a current carrying wire produces electric field?
What happens when we bring magnetic compass near a closed electric circuit?
When a magnet is brought close to it,
the needle gets deflected
. When an electric current passes through a wire, it behaves like a magnet. This magnetic effect of the electric current makes the compass needle deflect from the north-south direction.
What happened to magnetic needle if it is placed near the electric current?
Solution : A magnetic needle placed close to a current carrying conductor
deflects due to the magnetic effect of the electric current
. Because the magnetic needle (or its field) interacts with the magnetic field produced by the current carrying conductor it deflects.
What happened to the needle of the compass when current passes through the solenoid?
What happens to the compass needle as the magnetic wire is connected to the battery?
The compass needle moved
when the wire was connected to the battery. The important point here is that the needle is affected by the wire only when both ends of the wire are connected to the battery because only at this time is current flowing through the circuit.
How can magnetic field affect compass?
The magnetic field is a zone where the force is active along imaginary lines. From the south magnetic pole to the north magnetic pole, this force has an effect on all magnetized objects, such as the needle of a compass. Under the effect of Earth’s magnetic field,
the needle always points toward the north magnetic pole
.
What happens if you place a compass near a current conducting wire mention the effect of current observed in this case?
Expert-verified answer
a)If the magnitude of current is increased ,then
the deflection of the compass will increase
as the electric field created by the wire in turn creates a magnetic field which deflects the compass needle.
Which magnet is used in compass?
Hence Compass uses the
permanent Magnet
. Option (B) is the correct answer. The materials which are strongly attracted to magnet collect ferromagnetic or ferromagnetic, like iron, nickel , Cobalt and their Alloys of rare metals can be Magnetized Permanently by placing with permanent magnets.
