A speaker is most likely to contain an electromagnet to produce sound by vibrating a diaphragm.
Increasing the number of turns in the coil of wire will most likely increase the strength of the magnetic field produced by an electromagnet. More turns of wire will result in a stronger magnetic field due to the increased current flowing through the coil.
Yes, most doorbells have an electromagnet inside them. When the doorbell button is pressed, the circuit is completed, activating the electromagnet which causes a hammer to strike the bell or chime, producing the ringing sound.
Basically, yes. However, especially when the electromagnet uses iron, it will most likely have some residual magnetism when the current is switched off. Note: You shouldn't used the word "charged" in this context. That refers to electrical charges, and is not usually used for magnetism.
Electromagnets can attract or repel various materials besides metals. Materials that contain iron, nickel, or cobalt are generally the most responsive to electromagnets, but other materials like certain ceramics or even liquids can also be affected depending on their magnetic properties. The extent to which an electromagnet can move non-metal materials will depend on the specific properties of the material and the strength of the magnetic field generated by the electromagnet.
Most metals. eg Aluminium, copper, tin, uranium
A device on the end of a crane to lift cars and junk
living things are most likely to contain organic compounds
Add a battery
most likely not
Dairy products
Where are you most likely to come across this type of input device?
Coquina is the sedimentary rock most likely to contain visible fossils.
Rise of the eldrazi
The answer is plankton..
sedimentary bedrock
natural substances
The sagittal suture is most likely to contain sutural bones. Sutural bones are small bones found within the sutures of the skull, and the sagittal suture is the largest and most complex cranial suture which can exhibit these bones.