GEOLOGY

EARTH SCIENCE

MAGNETISM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A coil of wire with a current
A
solenoid
B
electromagnet
C
galvanometer
D
electric motor
Explanation: 

Detailed explanation-1: -A solenoid is a coil of wire with electric current flowing through it, giving it north and south magnetic poles and a magnetic field. Using more turns of wire in the coil or more current increases the strength of the solenoid’s magnetic field.

Detailed explanation-2: -An electromagnet is a solenoid wrapped around a bar of iron or other ferromagnetic material. A solenoid is a coil of wire with electric current flowing through it. This gives the coil north and south magnetic poles and a magnetic field.

Detailed explanation-3: -When a direct electric current is passed through it, the shape of the magnetic field is very similar to the field of a bar magnet. The field inside a solenoid is strong and uniform. The small magnetic fields caused by the current in each turn of the coil add together to make a stronger overall magnetic field.

Detailed explanation-4: -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.

Detailed explanation-5: -A solenoid is a coil of wire tied across a piston that is made of iron, in the form of a corkscrew. According to the laws of electromagnetism, when an electric current passes via the wire a magnetic field is generated.

There is 1 question to complete.