Science Flashcards
What is potential difference?
The potential difference is the work done per unit charge to move a charge between two points in an electric field.
True or False: Electromagnets can be turned on and off.
True
Fill in the blank: The unit of potential difference is __________.
volt
What side of the periodic table does non-metals go?
Right-hand side
What is a common use of electromagnets?
In electric locks for school gates
What is the relationship between current and magnetic field strength in an electromagnet?
The magnetic field strength increases with an increase in current.
True or False: Magnetic fields can exert forces on stationary charges.
False
What is the direction of the magnetic field around a current-carrying wire?
It forms concentric circles around the wire, with the direction determined by the right-hand rule.
Fill in the blank: The area around a magnet where magnetic forces can be detected is called a __________.
magnetic field
What is one application of magnetic fields in everyday technology?
In data storage devices such as hard drives.
