| Quiz | Magnetism and electromagnetism |
|---|---|
| Name | |
| Result | PASSED |
| Score | 14 / 17 (82.4%) |
| Passing score | 13.6 |
| Quiz took | 8 min 55 sec |
| Quiz finished at | 2021-04-29 01:51:32 |
When a current cuts through a magnetic field, you can find which way the force will act using
Which of the following generates alternating current?
When magnetic materials are put into magnetic field, a magnet can be
A basic loudspeaker can made from an electromagnet and
Which of the following generates direct current?
An electromagnet is made using a solenoid and
A motor converts
In order to swap the contacts every half turn in a motor, we can use
The frequency of a sound wave from a loudspeaker is controlled by the
The closer together field lines are, the _______ the magnetic field is
Which of the following converts pressure variations of a sound wave into variations in current in an electric current?
A generator converts
A coil of wire can also be called a
Which of these is not a magnetic element?
Which of the following can be used to change the size of the potential difference?
Which of the following would not increase the size of the induced potential difference in a generator?
The magnetic field around a wire with a current running through it, can represented using