Magnets
A device that measures small currents is called
What is a galvanometer?
A wire with coils or loops is called a...
What is a solenoid?
A device that increases or decreases the voltage of electricity is called a
What is a transformer?
If we poured iron shavings on the magnetic field, where would we see the highest concentration of iron?
What is at the poles?
The _______ of a magnetic field in an electromagnet _______ with more coils or more current.
What is strength? What is increases?
An electric motor moves by...
The electric current traveling through a magnetic field and causing the axle to rotate
What is add or remove a battery source/current?
Magnetic field lines run from...
What is north to south?
The angle between two lines that lead to the geographic and magnetic north pole is called...
What is magnetic declination?
A generator induces electricity by...
Having the armature and crank rotate within a magnetic field to induce/generate an electric current
How is an electromagnet different from a solenoid?
What is "an electromagnet contains ferromagnetic material"?
How are galvanometers different from electric motors? How are they similar?
In a galvanometer, a pointer turns as the current travels in one direction. An electric motor has a current that is reversed, causing the axle to rotate in a complete circle. Both transform mechanical energy into electrical energy as they create motion.
What is electromagnetic induction?