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| electrical_engineering_and_electronics_1:block02 [2026/01/10 13:29] – mexleadmin | electrical_engineering_and_electronics_1:block02 [2026/01/10 13:30] (current) – mexleadmin | ||
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| ====== Block 02 — Electric Charge, Current, Voltage ====== | ====== Block 02 — Electric Charge, Current, Voltage ====== | ||
| - | ===== 3.0 Intro ===== | + | ===== 2.0 Intro ===== |
| - | ==== 3.0.1 Learning Objectives ===== | + | ==== 2.0.1 Learning Objectives ===== |
| < | < | ||
| After this 90-minute block, you can | After this 90-minute block, you can | ||
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| </ | </ | ||
| - | ==== 3.0.2 Preparation at Home ==== | + | ==== 2.0.2 Preparation at Home ==== |
| Be aware, that EEE1 has 5 ECTS, i.e. an overall weekly load of about 8..10 hours (incl. our lecture in presence). \\ | Be aware, that EEE1 has 5 ECTS, i.e. an overall weekly load of about 8..10 hours (incl. our lecture in presence). \\ | ||
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| - | ==== 3.0.3 90-minute plan ==== | + | ==== 2.0.3 90-minute plan ==== |
| - Warm-up (5–10 min): | - Warm-up (5–10 min): | ||
| - Recall of SI units from Block 01; estimate “How many electrons per second flow at $1~\rm A$? | - Recall of SI units from Block 01; estimate “How many electrons per second flow at $1~\rm A$? | ||
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| - Wrap-up (5 min): Summary and pitfalls. | - Wrap-up (5 min): Summary and pitfalls. | ||
| - | ==== 3.0.4 Conceptual Overview ==== | + | ==== 2.0.4 Conceptual Overview ==== |
| <callout icon=" | <callout icon=" | ||
| - **Charge $Q$** is the fundamental “substance” of electricity, | - **Charge $Q$** is the fundamental “substance” of electricity, | ||
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| ~~PAGEBREAK~~ ~~CLEARFIX~~ | ~~PAGEBREAK~~ ~~CLEARFIX~~ | ||
| - | ===== 3.1 Core Content ===== | + | ===== 2.1 Core Content ===== |
| - | ==== 3.1.1 Electric Charge ==== | + | ==== 2.1.1 Electric Charge ==== |
| <WRAP right> | <WRAP right> | ||
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| </ | </ | ||
| - | ==== 3.1.2 Electric Current ==== | + | ==== 2.1.2 Electric Current ==== |
| An **electric current** arises when charges move in a preferred direction, e.g. by attraction and repulsion. | An **electric current** arises when charges move in a preferred direction, e.g. by attraction and repulsion. | ||
| The current is defined as | The current is defined as | ||
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| </ | </ | ||
| - | ==== 3.1.3 Electrodes ==== | + | ==== 2.1.3 Electrodes ==== |
| An electrode is a connection (or pin) of an electrical component. \\ | An electrode is a connection (or pin) of an electrical component. \\ | ||
| Looking at a component, the electrode is characterized as the homogenous part of the component, where the charges come in / move out (usually made out of metal). \\ | Looking at a component, the electrode is characterized as the homogenous part of the component, where the charges come in / move out (usually made out of metal). \\ | ||
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| - | ==== 3.1.4 Electric Voltage ==== | + | ==== 2.1.4 Electric Voltage ==== |
| Every rock on a mountain has a higher energy potential than a rock in the valley. As higher up and as more mass the rock has, as more energy is stored. The energy difference $\Delta W_{1,2}$ is given by the height difference $\Delta h_{1,2}$ | Every rock on a mountain has a higher energy potential than a rock in the valley. As higher up and as more mass the rock has, as more energy is stored. The energy difference $\Delta W_{1,2}$ is given by the height difference $\Delta h_{1,2}$ | ||
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| - | ==== 3.1.5 Comparison: Mechanics vs Electrics ==== | + | ==== 2.1.5 Comparison: Mechanics vs Electrics ==== |
| <WRAP group>< | <WRAP group>< | ||
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| </ | </ | ||
| - | ===== 3.2 Common Pitfalls ===== | + | ===== 2.2 Common Pitfalls ===== |
| * Mixing electron flow vs. conventional current. | * Mixing electron flow vs. conventional current. | ||
| * Misinterpreting current as “speed” rather than rate of charge flow. | * Misinterpreting current as “speed” rather than rate of charge flow. | ||
| * Given the definition, rechargeable batteries not have a fixed cathode / anode. Here, usually discharging the battery is considered. | * Given the definition, rechargeable batteries not have a fixed cathode / anode. Here, usually discharging the battery is considered. | ||
| - | ===== 3.3 Exercises ===== | + | ===== 2.3 Exercises ===== |
| {{tagtopic> | {{tagtopic> | ||