| A | B |
|---|
| Which type of energy is associated with electric current | magnetic |
| When a wire with a current is placed in a magnetic field | electrical energy is transformed into mechanical energy |
| What is one difference between a galvonometer and an electric motor | an electric motor causes something to move |
| To reverse the direction of current in a motor, current is conducted | in the direction of rotation |
| The process of generating an electric current from the motion of a conductor in a magnetic field is | induction |
| the type of current produced by a battery is | induced current |
| A DC generator is the same as a | armature |
| a generator transforms | mechanical energy into electrical energy |
| A device that increases or decreases voltage is called | transformer |
| What is produced when there is a current in the primary coil of a transformer? | magnetic field |
| Electric current from a generating plant is | alternating current transmitted at low voltages, but usually used at high voltages |
| a device used to measure small currents | commutator |
| an alternating current consists of charges that | move back and forth in a circuit |
| a device that supplies the mechanical energy to turn the armature of a generator is a | turbine |
| a soleniod with a ferromagnetic core is called a | lodestone |
| you can increase the strenght of an electromagnet's field by | decreasing the number of loops in the solenoid |
| ________ does not involve the use of an electrmagnet | recording a song onto an audiotape |
| a coil of wire with a current is called | solenoid |
| the relationship between electricity and magnetism is called | electromagnetism |
| an electric current produces | magnetic field |
| the ability to move an object over a distance | energy |
| a magnetic field produced by a current | can have it's speed slowed |
| the two ends of a solenoid act like | poles |
| what is used to turn the pointer of a galvanometer | an electric current |
| what is used to turn the pointer of a galvonmeter | an electric current |
| what device transforms electrical energy into mechanical energy | electric motor |
| in an electric motor, a commutator | repeatedly reverses the flow of current through the armature |
| what device increases voltage | step-up transformer |
