EARTH SCIENCE
MAGNETISM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
replacing the wire with an insulator inside the solenoid
|
|
|
increasing the temperature surrounding the solenoid
|
|
|
increasing the number of wire coils in the solenoid
|
|
|
removing the iron core from the solenoid
|
Detailed explanation-1: -The strength of the magnetic field produced by the solenoid can be increased: By placing soft iron inside the solenoid. By increasing the number of turns of the coil.
Detailed explanation-2: -An electromagnet is a solenoid wrapped around a bar of iron or other ferromagnetic material. It is stronger if there are more turns in the coil of wire or there is more current flowing through it. A bigger bar or one made of material that is easier to magnetize also increases an electromaget’s strength.
Detailed explanation-3: -The greater the current, the greater the strength. This because the current increases there is more flow of electrons which in turn increases the magnetic field around it. (b) The number of turns is increased. The greater the number of coils, the greater the strength.
Detailed explanation-4: -Increasing the number of coils adds more field lines and makes for a stronger electromagnetic field. As the number of loops of wire increases, the strength of the electromagnetic field increases. So, the strength of the field is affected by the number of coils, wire used, and the thickness of the wire.
Detailed explanation-5: -increasing the number of turns on the coil. increasing the current. placing an iron core inside the solenoid.