Class 7 Science MCQs – Certification Test 10

Electric Motors MCQs (Question 10) – App & e-Book Download

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Class 7 Science MCQs e-Book – Google Book

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MCQ 10: To make the coil keep rotating, the current is reversed after every half turn by a device called:

brush
commutator
mutator
carbon spring

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Free Electric Motors Mobile App – Download for Android & iOS

The App: Electric Motors MCQs App to Learn Electric Motors Notes, 7th Grade Science MCQs App, and Earth Science MCQs App to encourage academic learning growth.

Download the "Electric Motors MCQs" App: Free 7th Grade Science App (Android & iOS) to master science concepts. Download Play Store & App Store Study Apps with all functionalities for science app learning systems.