Electricity & Magnetism

스피커 Speaker

Speaker

Current Auto A changing electrical signal is fed to the voice coil of a loudspeaker, which lies within the magnetic field of a permanent magnet. The signal in the coil causes it…
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만약 물 분자가 직선형 구조라면? Polarity of Water

Polarity of Water

Structure of Water Molecules Water molecules are polarized, giving them slightly positive and slightly negative sides. This makes water even more susceptible to a charged rod’s attraction. As the water flows downward,…
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에너지 밴드 Energy Band

Energy Band of Metal

Energy band and energy gap According to Niels Bohr’s atomic model, electrons in the atoms do not have a continuous energy. Electrons can only have a certain set of energy. This is…
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알루미늄 깡통과 철 깡통 분리하기 Separation of Steel and Aluminum

Separation of Steel and Aluminum

Iron Aluminium How can you classify iron and aluminum? Iron cans stick well to the magnet. However, aluminum cans do not stick well to magnets. If the last wheel of the conveyor…
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인덕터와 커패시터 Inductor and Capacitor 3

Inductor and Capacitor 3

Run High frequency alternating currents are difficult to pass through the inductor. An inductor is a part made by winding a wire. In the case of direct current, the inductor only works…
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인덕터와 커패시터 Inductor and Capacitor 2

Inductor and Capacitor 2

Run High frequency alternating currents are difficult to pass through the inductor. An inductor is a part made by winding a wire. In the case of direct current, the inductor only works…
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인덕터와 커패시터 Inductor and Capacitor

Inductor and Capacitor

Run   Switch Why does the current gradually increase in the inductor? When a current starts to flow in the inductor, a magnetic field is generated around the inductor at the same…
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자석은 왜 못을 끌어 당길까? Magnetic Induction

Magnetic Induction

Magnetic force appears Between magnets. The pushing force appears between the same poles, and the pulling force between the other poles. Generally, iron is not a magnet. However, if an iron is…
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저항의 연결 Resistance Connection

Resistance Connection

In parallel circuit, The current splits up when it comes to a branch. The current in all the branches adds up to the current in the main part of the circuit. If…
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