What is a permanent magnet?
Choose 1 answer
{"type":"multi-choice","id":"3064","dataJson":{"type":"multi-choice","slide_id":16314,"key":3064,"prompt":"\u003cp\u003eWhat is a permanent magnet?\u003c/p\u003e","validResponse":[3305],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"a magnet that always has its magnetic properties","value":3305,"fileboyId":"a5da30c8-6f35-41d1-b96d-e398120245f2"},{"label":"a part in a DC motor that temporarily breaks the circuit to allow the motor to keep spinning in one direction","value":3302,"fileboyId":"e89ebb8a-d271-4570-8217-557a168269cf"},{"label":"a magnet that becomes magnetic when an electric current is passed through it","value":3301,"fileboyId":"602b3f87-bf48-4bee-a31a-d3f3ed1e9cf5"},{"label":"the flow of electricity, measured in Amps","value":3304,"fileboyId":"383015c2-6e76-4308-9aac-259a46299e93"},{"label":"a motor that converts direct current electrical energy into kinetic energy, by utilising electromagnetism\n","value":3303,"fileboyId":"95db7f05-70f1-4d34-92b3-f7350806e368"}],"question_data":{"body":"So, unlike a permanent magnet, we can control when a magnetic field is going to be produced. The strength of the magnet can also be varied by changing the amount of electrical current passing through it. This is another advantage of using electromagnets; permanent magnets have one fixed strength. When might this be beneficial?","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/f24af165-960d-4864-b606-574fdef3599b?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
What do we call a magnet that becomes magnetic when an electric current is passed through it?
Choose 1 answer
{"type":"multi-choice","id":"3068","dataJson":{"type":"multi-choice","slide_id":16316,"key":3068,"prompt":"\u003cp\u003eWhat do we call a magnet that becomes magnetic when an electric current is passed through it? \n\u003c/p\u003e","validResponse":[3301],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"a part in a DC motor that temporarily breaks the circuit to allow the motor to keep spinning in one direction","value":3302,"fileboyId":"e89ebb8a-d271-4570-8217-557a168269cf"},{"label":"a magnet that becomes magnetic when an electric current is passed through it","value":3301,"fileboyId":"602b3f87-bf48-4bee-a31a-d3f3ed1e9cf5"},{"label":"the flow of electricity, measured in Amps","value":3304,"fileboyId":"383015c2-6e76-4308-9aac-259a46299e93"},{"label":"a motor that converts direct current electrical energy into kinetic energy, by utilising electromagnetism\n","value":3303,"fileboyId":"95db7f05-70f1-4d34-92b3-f7350806e368"},{"label":"a magnet that always has its magnetic properties","value":3305,"fileboyId":"a5da30c8-6f35-41d1-b96d-e398120245f2"}],"question_data":{"body":"We can use this phenomenon to create an electromagnet. An example of a simple electromagnet is a wire wrapped multiple times around a piece of metal, which is then connected to a power source like a battery. Using the image, what do you think the 3 components of an electromagnet are?\n","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/b4116a89-8f34-4dfa-a7a6-2515f005f359?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
What are split rings?
Choose 1 answer
{"type":"multi-choice","id":"3067","dataJson":{"type":"multi-choice","slide_id":16318,"key":3067,"prompt":"\u003cp\u003eWhat are split rings?\u003c/p\u003e","validResponse":[3302],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"the flow of electricity, measured in Amps","value":3304,"fileboyId":"383015c2-6e76-4308-9aac-259a46299e93"},{"label":"a part in a DC motor that temporarily breaks the circuit to allow the motor to keep spinning in one direction","value":3302,"fileboyId":"e89ebb8a-d271-4570-8217-557a168269cf"},{"label":"a magnet that becomes magnetic when an electric current is passed through it","value":3301,"fileboyId":"602b3f87-bf48-4bee-a31a-d3f3ed1e9cf5"},{"label":"a motor that converts direct current electrical energy into kinetic energy, by utilising electromagnetism\n","value":3303,"fileboyId":"95db7f05-70f1-4d34-92b3-f7350806e368"},{"label":"a magnet that always has its magnetic properties","value":3305,"fileboyId":"a5da30c8-6f35-41d1-b96d-e398120245f2"}],"question_data":{"body":"When the wire is at a 90˚ angle between the two magnets, the circuit is broken because of the gap in the split rings. However, the coil carries on spinning from the momentum it has gained and it reconnects with the power source once it has passed the 90˚ angle. What would eventually happen if there was no break in the circuit?","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/75c4348e-cdeb-4df9-b096-c36531c066ea?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
What is electromagnetism?
Choose 1 answer
{"type":"multi-choice","id":"3066","dataJson":{"type":"multi-choice","slide_id":16316,"key":3066,"prompt":"\u003cp\u003eWhat is electromagnetism?\u003c/p\u003e","validResponse":[3303],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"a magnet that always has its magnetic properties","value":3305,"fileboyId":"a5da30c8-6f35-41d1-b96d-e398120245f2"},{"label":"a motor that converts direct current electrical energy into kinetic energy, by utilising electromagnetism\n","value":3303,"fileboyId":"95db7f05-70f1-4d34-92b3-f7350806e368"},{"label":"a part in a DC motor that temporarily breaks the circuit to allow the motor to keep spinning in one direction","value":3302,"fileboyId":"e89ebb8a-d271-4570-8217-557a168269cf"},{"label":"the flow of electricity, measured in Amps","value":3304,"fileboyId":"383015c2-6e76-4308-9aac-259a46299e93"},{"label":"a magnet that becomes magnetic when an electric current is passed through it","value":3301,"fileboyId":"602b3f87-bf48-4bee-a31a-d3f3ed1e9cf5"}],"question_data":{"body":"We can use this phenomenon to create an electromagnet. An example of a simple electromagnet is a wire wrapped multiple times around a piece of metal, which is then connected to a power source like a battery. Using the image, what do you think the 3 components of an electromagnet are?\n","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/b4116a89-8f34-4dfa-a7a6-2515f005f359?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
What word describes the flow of electricity which is measured in Amps?
Choose 1 answer
{"type":"multi-choice","id":"3065","dataJson":{"type":"multi-choice","slide_id":16317,"key":3065,"prompt":"\u003cp\u003eWhat word describes the flow of electricity which is measured in Amps?\n\u003c/p\u003e","validResponse":[3304],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"the flow of electricity, measured in Amps","value":3304,"fileboyId":"383015c2-6e76-4308-9aac-259a46299e93"},{"label":"a magnet that becomes magnetic when an electric current is passed through it","value":3301,"fileboyId":"602b3f87-bf48-4bee-a31a-d3f3ed1e9cf5"},{"label":"a part in a DC motor that temporarily breaks the circuit to allow the motor to keep spinning in one direction","value":3302,"fileboyId":"e89ebb8a-d271-4570-8217-557a168269cf"},{"label":"a magnet that always has its magnetic properties","value":3305,"fileboyId":"a5da30c8-6f35-41d1-b96d-e398120245f2"},{"label":"a motor that converts direct current electrical energy into kinetic energy, by utilising electromagnetism\n","value":3303,"fileboyId":"95db7f05-70f1-4d34-92b3-f7350806e368"}],"question_data":{"body":"As soon as the electrical supply is switched off, i.e. when there is no current, the piece of metal is no longer magnetic. Wrapping the wire around the piece of metal more times makes the electromagnet stronger. Why do you think this is?","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/1d053c9b-d62a-4564-a727-3a7762051fa8?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
Look at the slide below to work out the answer.