New Sponsored units from
Rolls-Royce Submarines
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{"type":"multi-choice","id":"73908","dataJson":{"key":0,"prompt":"Is the following statement True or False? When electricity flows through a wire, a small magnetic field is produced around the wire.","options":[{"key":"0.26883779534012275","label":"True","value":"True"},{"key":"0.9576367818399955","label":"False","value":"False"}],"limitChoices":{"max":1,"min":1},"validResponse":["True"]}}
Select the missing words in the text.
{"type":"fill-in-blanks","id":"73909","dataJson":{"prompt":"Fill in the blanks.","options":{"two":[{"label":"one","value":"one"},{"label":"two","value":"two"},{"label":"four","value":"four"}],"direct":[{"label":"differential","value":"differential"},{"label":"digital","value":"digital"},{"label":"direct","value":"direct"}]},"template":"Complete the following sentence: DC ({{direct}} current) motors are simple motors that have {{two}} permanent magnets facing each other and a coil of wire in the centre. ","validOptions":["two","direct"],"validResponse":{"two":"two","direct":"direct"}}}
Choose 2 answers
{"type":"multi-choice","id":"73910","dataJson":{"key":12,"prompt":"Which of the following factors affect the strength of an electromagnet?","options":[{"key":"0.6645411770481175","label":"The strength of the applied current","value":"The strength of the applied current"},{"key":"0.46346334370754894","label":"The colour of the wire","value":"The colour of the wire"},{"key":"0.9286691465258791","label":"The number of turns on the coil of wire","value":"The number of turns on the coil of wire"},{"key":"0.39487643389544413","label":"How long the electromagnet is left on for","value":"How long the electromagnet is left on for"}],"limitChoices":{"max":2,"min":2},"validResponse":["The strength of the applied current","The number of turns on the coil of wire"]}}
Choose 1 answer
{"type":"multi-choice","id":"73911","dataJson":{"key":13,"prompt":"What is the unit of measurement for an electric current?","options":[{"key":"0.004876022809963243","label":"Volt","value":"Volt"},{"key":"0.7686963140242608","label":"Newton","value":"Newton"},{"key":"0.30397742026645924","label":"Amp","value":"Amp"},{"key":"0.0590953688848993","label":"Joule","value":"Joule"}],"limitChoices":{"max":1,"min":1},"validResponse":["Amp"]}}
Choose 1 answer
{"type":"multi-choice","id":"73912","dataJson":{"key":14,"prompt":"A DC motor converts electrical energy into which form of energy?","options":[{"key":"0.4251210696333366","label":"Kinetic Energy","value":"Kinetic Energy"},{"key":"0.055376936448146674","label":"Elastic Energy","value":"Elastic Energy"},{"key":"0.03508601782698684","label":"Gravitational Energy","value":"Gravitational Energy"},{"key":"0.8673755348856728","label":"Chemical Energy","value":"Chemical Energy"}],"limitChoices":{"max":1,"min":1},"validResponse":["Kinetic Energy"]}}
Look at the slide below to work out the answer.
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