What does voltage mean?
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What is a voltmeter?
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What does potential difference(PD) mean?
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{"type":"multi-choice","id":"3021","dataJson":{"type":"multi-choice","slide_id":16230,"key":3021,"prompt":"\u003cp\u003eWhat does potential difference(PD) mean?\u003c/p\u003e","validResponse":[3285],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"the voltage measured across a component\n","value":3285,"fileboyId":"1f243b25-095b-4054-86f6-e0f1305d57a8"},{"label":"the amount of energy per unit charge, measured in volts (V)\n","value":3283,"fileboyId":"ba6c18fd-27e7-4968-b481-9b20a3143d00"},{"label":"the unit of voltage; it is named after Alessandro Volta\n","value":3281,"fileboyId":"8b8502d2-6161-4cb1-bf9a-fea84806b65e"},{"label":"the amount of voltage across a power source\n","value":3284,"fileboyId":"8d30c5cb-8e4f-4269-b1b1-7ce88b639eaf"},{"label":"an instrument for measuring voltage","value":3282,"fileboyId":"d38b3481-42c0-4969-a5fb-802afb1f16a5"}],"question_data":{"body":"To use a voltmeter, we place it in parallel to what we want to measure. This is because a voltmeter compares the energy per coulomb before it enters and after it leaves a component. \n\n","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/da93763e-977c-4506-bd11-d264e8704ebb?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
What does electromotive force(EMF) mean?
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{"type":"multi-choice","id":"3020","dataJson":{"type":"multi-choice","slide_id":16226,"key":3020,"prompt":"\u003cp\u003eWhat does electromotive force(EMF) mean?\u003c/p\u003e","validResponse":[3284],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"an instrument for measuring voltage","value":3282,"fileboyId":"d38b3481-42c0-4969-a5fb-802afb1f16a5"},{"label":"the unit of voltage; it is named after Alessandro Volta\n","value":3281,"fileboyId":"8b8502d2-6161-4cb1-bf9a-fea84806b65e"},{"label":"the amount of energy per unit charge, measured in volts (V)\n","value":3283,"fileboyId":"ba6c18fd-27e7-4968-b481-9b20a3143d00"},{"label":"the voltage measured across a component\n","value":3285,"fileboyId":"1f243b25-095b-4054-86f6-e0f1305d57a8"},{"label":"the amount of voltage across a power source\n","value":3284,"fileboyId":"8d30c5cb-8e4f-4269-b1b1-7ce88b639eaf"}],"question_data":{"body":"We use voltage to describe power sources rather than energy because the energy that leaves a power source depends on the amount of current leaving the power source. For example, static shock from a doorknob is about 5,000V, but because there is such a low current, it doesn’t cause you any harm.\n","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/a8cb66d8-cbd8-4b17-978b-b2e9442765d0?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
What is a volt?
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Look at the slide below to work out the answer.