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Unit 9: How do electrons push large needles?
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If magnetic field exerts forces on individual charged particles, will it also exert force on a neutral current-carrying wire? Let's find out!
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- Force on a current in a magnetic fieldGet 3 of 4 questions to level up!
- Force on a current-carrying wire in a magnetic field (intermediate)Get 3 of 4 questions to level up!
Practice
- Torque acting on current loopsGet 3 of 4 questions to level up!
- Electric motor: parts and functionsGet 3 of 4 questions to level up!
- Electric motor: workingGet 3 of 4 questions to level up!
If we attach a coil to that rotating motor, we can move needles. But how do we make sure that the needle stops moving at a certain angle? Let's make a current measuring device!
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- Working of a moving coil galvanometerGet 3 of 4 questions to level up!
- Convert galvanometer into ammeter/voltmeterGet 3 of 4 questions to level up!
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