1 Answer
The safety of **AC (Alternating Current)** and **DC (Direct Current)** depends on several factors like **voltage**, **current level**, and **exposure time**, but here’s a simple comparison to help you understand:
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### **Basic Difference**
* **AC** changes direction many times per second (50 or 60 times per second, depending on country).
* **DC** flows in one direction only.
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### ⚠️ **Which is safer?**
* **At low voltages (like batteries):**
* **DC is generally safer**. A 12V or 24V DC battery won’t usually harm you.
* **At higher voltages (like mains electricity):**
* **AC can be more dangerous** for the human body **because it causes muscles to contract and can "lock" you in place**, making it harder to let go if you’re shocked.
* **DC** at high voltage is also dangerous but **less likely to cause the "can't let go" effect.**
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### Main Risk Factor: **Current through the body**
* **More than 30 mA (0.03 Amps)** can be dangerous or even fatal.
* Both AC and DC can kill if the voltage and current are high enough.
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### Simple Rule:
> **Low voltage DC = Safer**
> **High voltage AC = More dangerous**
> **Both can be deadly at high levels**
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Would you like a small chart or image to help your students visualize the difference more easily?
---
### **Basic Difference**
* **AC** changes direction many times per second (50 or 60 times per second, depending on country).
* **DC** flows in one direction only.
---
### ⚠️ **Which is safer?**
* **At low voltages (like batteries):**
* **DC is generally safer**. A 12V or 24V DC battery won’t usually harm you.
* **At higher voltages (like mains electricity):**
* **AC can be more dangerous** for the human body **because it causes muscles to contract and can "lock" you in place**, making it harder to let go if you’re shocked.
* **DC** at high voltage is also dangerous but **less likely to cause the "can't let go" effect.**
---
### Main Risk Factor: **Current through the body**
* **More than 30 mA (0.03 Amps)** can be dangerous or even fatal.
* Both AC and DC can kill if the voltage and current are high enough.
---
### Simple Rule:
> **Low voltage DC = Safer**
> **High voltage AC = More dangerous**
> **Both can be deadly at high levels**
---
Would you like a small chart or image to help your students visualize the difference more easily?