Table of Contents
- 1 What is a device that increases or decreases voltage in a powerline?
- 2 What is a device that increases or decreases the voltage of an alternating current through electromagnetic induction?
- 3 What can be used to change the voltage of an alternating current?
- 4 What is a device that increases voltage?
- 5 Where is the location of the strongest magnetic force?
- 6 What is a device that uses electromagnet to measure electric current?
- 7 Can both AC and DC be transformed?
- 8 What device that decreases voltage?
What is a device that increases or decreases voltage in a powerline?
Study Guide
| Question | Answer |
|---|---|
| A device that increases or decreases voltage in a power line is called a? | transformer |
| Current that does not reverse direction is called? | Direct current |
| The location of the strongest magnetic force on a magnet are the? | magnetic poles |
What is a device that increases or decreases the voltage of an alternating current through electromagnetic induction?
transformer
A transformer is a device that increases or decreases the voltage and current of two linked AC circuits. AC (alternating current) induces a constantly changing magnetic field. The changing magnetic field induces an alternating current in a nearby coil with a different number of turns.
What is the term for the region around a magnet where the magnetic forces act?
A magnetic field is the region around a magnet where a force acts on another magnet or on a magnetic material.
What can be used to change the voltage of an alternating current?
Transformers are used to increase or decrease the voltage of alternating currents. A transformer consists of two coils of wire wound on a metal core. An alternating voltage is applied to one coil (the primary coil). This causes a changing (alternating) magnetic field to be set up in the core.
What is a device that increases voltage?
A device that increases or decreases voltage is called. transformer.
Whats a device that increases voltage?
A transformer is an electrical device that changes the voltage of the mains electrical supply. A transformer that increases the voltage is called a step-up transformer, while a transformer that decreases the voltage is called a high-voltage transformer.
Where is the location of the strongest magnetic force?
north pole
The magnetic field of a bar magnet is strongest at either pole of the magnet. It is equally strong at the north pole when compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center.
What is a device that uses electromagnet to measure electric current?
Galvanometer: a device that uses an electromagnet to measure electric current.
What is a device that decreases voltage?
A transformer is a device that increases or decreases voltage. A transformer consists of two separate coils of insulated wire wrapped around an iron core. The primary coil is connected to a circuit with a voltage source and alternating current.
Can both AC and DC be transformed?
A transformer is built to transfer the energy from one circuit into another circuit by way of magnetic coupling. An alternating current creates a magnetic flux in the core on its way through the first winding, inducing the voltage in the others. It can convert high and low voltages, it cannot convert AC to DC.
What device that decreases voltage?
Transformers change the voltage in your home so you can use the electricity. A transformer is a device that increases or decreases voltage. A transformer consists of two separate coils of insulated wire wrapped around an iron core.