Quick Answer: Which Would Ultimately Cause The Armature In An Electric Motor To Spin?

How can we compare how strong an electromagnet is?

The magnetic field strength of an electromagnet is therefore determined by the ampere turns of the coil with the more turns of wire in the coil the greater will be the strength of the magnetic field..

What are the advantages of using an electromagnet?

The primary advantage of using an electromagnet over a permanent magnet is that you can control its magnetic field. You turn on and off the device’s magnetic field, and with many electromagnets, you can even control the power of the magnetic field.

What are the 6 parts of an electric motor?

These six components include:1) The Rotor. The rotor is the moving part of your electric motor. … 3) The Bearings. The rotor in your electric motor is supported by bearings, which allow it to turn on its axis. … 4) The Windings. … 5) The Air Gap. … 6) The Commutator. … What Do All of These Components Have in Common?

What is the most common type of electromagnet?

Car scrap-yards use huge electromagnets to lift heaps of crumpled iron and steel. Switch off the current and the object crashes to the ground. In the home, by far the most common use of electromagnets is in electric motors.

What is the function of the slip rings in an electric generator quizlet?

Slip rings, on a simple generator, provide a means of: connecting the load conductors to the generator. The electric circuit of a dc generator consist of the following parts: brushes, field coils, commutator, armature winding.

Which most likely has the greatest conductivity?

As we know that copper is a very good conductor of electricity and it is warm which enables the electrons to move faster and easily, copper is the correct answer.

Which two wire properties would provide the greatest?

Hence, two wire properties that would provide the greatest resistance to the flow of a current are long and thin.

What is required for an electric charge to flow through a wire?

To produce an electric current, three things are needed: a supply of electric charges (electrons) which are free to flow, some form of push to move the charges through the circuit and a pathway to carry the charges. … The flow of electricity can be likened to a flow of water through a pipe.

Where do we use electromagnets in everyday life?

Some everyday devices that have electromagnets inside them include:Microphones, speakers, headphones, telephones and loudspeakers.Electric motors and generators.Doorbells and electric buzzers.Computer hard drives.Multiple household appliances.

Which contrasts best electric doorbells or audio speakers?

a. Doorbells involve rapid changes in the direction of current, and speakers do not.

What is the function of an electromagnet in an electric doorbell?

When you press a doorbell button, you complete an electrical circuit that allows household electricity to flow through the doorbell’s internal electromagnet. The magnetic field generated by the electromagnet is then used to power a mechanism that creates the doorbell sound. Doorbells are low-voltage devices.

What symbol would best represent an electric fan in an electric circuit?

The correct answer is: C. The symbol for a resistor (attached). The symbol would best represent an electric fan in an electric circuit.

Are electromagnets AC or DC?

An electromagnet is simply a coil of wire. It is usually wound around an iron core. … DC electromagnets are principally used to pick up or hold objects. When connected to an AC voltage or current source, the electromagnet will be changing its flux density as the current fluctuates.

Which devices use electromagnets?

Electromagnets are very widely used in electric and electromechanical devices, including:Motors and generators.Transformers.Pickups.Relays.Electric bells and buzzers.Loudspeakers and headphones.Actuators such as valves.Magnetic recording and data storage equipment: tape recorders, VCRs, hard disks.More items…

Which parts of an electric generator are connected?

The armature and commutator of an electric generator are connected. Explanation: The machine that is used to convert mechanical energy into electrical energy is known as an electric generator.

What would decrease the resistance of a wire?

Thicker wires have a larger cross-section that increases the surface area with which electrons can flow unimpeded. The thicker the wire, therefore, the lower the resistance.

What is required for an electric charge to flow through a wire quizlet?

A difference in electrical potential is needed for charge to flow. The flow of charge persists as long as there is potential difference ; without a potential difference, or once both ends reach an equilibrium, flow ceases. … A continuous potential difference, often provided by a battery, is needed for charge to flow.

At which position would the electric force be greatest?

Explanation: The electric force will be maximum at the position where the number of electric lines are maximum. As we can observe that the maximum number of lines are at position 4. Thus, electric force is maximum at 4.

What do brushes do in an electric motor?

Simply put, carbon brushes reduce the damage to the motor. The block of carbon, referred to as a brush, carries a current back and forth from the stationary parts of a motor to the moving parts. These brushes also help transmit electricity from outside the motor to the mid part, or spinning area of the motor.

What is the function of armature in an electric motor?

In the armature, an electromotive force is created by the relative motion of the armature and the field. When the machine or motor is used as a motor, this EMF opposes the armature current, and the armature converts electrical power to mechanical power in the form of torque, and transfers it via the shaft.

Which best explains why the bell would not ring in this set up?

Which best explains why the bell would not ring in this set-up? The circuit is open. An electric generator converts kinetic energy into ____energy.

Does an electric motor use an electromagnet?

An electric motor is a device that uses an electromagnet to change electrical energy to kinetic energy. … When current flows through the motor, the electromagnet rotates, causing the shaft to rotate as well. The rotating shaft moves other parts of the device.

What is electric Bell & How it works?

An electric bell is a mechanical or electronic bell that functions by means of an electromagnet. … When an electric current flows through the coils, the electromagnet creates a magnetic field which pulls the armature towards it, causing the hammer to strike the bell.