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50: Different Types of Electric Motor for Performing Different Tasks |
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49: Using Alternating Current to Reverse the Magnetic Polarity |
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48: Permanent Magnets vs Electro-Magnets in Electric Motors |
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47: Creating More Powerful Electro-Magnets and Electric Motors |
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46: Electro-Magnet Terminology |
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45: Creating Rotational Movement with an Electro-Magnet |
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44: One Electro-Magnet with Four Ways to Change the Position of the North and South Poles |
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43: Swapping the North and South Poles and the Direction of Electro-Magnetic Lines of Force |
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42: Creating a Strong Electro-Magnetic Field with Multiple Loops of Wire |
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41: Electro-Magnets: Poles and Magnetic Fields |