The best protection against shock from a live circuit is resistance and the current will only be limited by body resistance if a person is in direct contact with voltage source (as shown in figure and equation below). Resistance can be added to the body through the use of insulated tools, gloves, boots, and other gear. Current in a circuit is a function of available voltage divided by the total resistance in the path of the flow.

Using Ohm’s law: I=V/R=V/R_Body

Draw an equivalent circuit and formula from Ohm’s law for a person wearing insulated gloves and boots.

To draw the equivalent circuit and derive the formula from Ohm's law for a person wearing insulated gloves and boots, we need to model the situation with the additional resistances provided by the insulation.

### 1. **Equivalent Circuit:**

- **Voltage Source (V):** This represents the live circuit or voltage source the person is in contact with.
- **Body Resistance (R_Body):** This is the resistance offered by the human body.
- **Glove Resistance (R_Glove):** This is the resistance provided by the insulated gloves.
- **Boot Resistance (R_Boot):** This is the resistance provided by the insulated boots.

These resistances are in series because the current must flow through each resistance sequentially.

### **Equivalent Circuit Diagram:**

```
   (V)
    |
    |
  -----
  |    |
  R_Glove
  |    |
  -----
    |
  -----
  |    |
  R_Body
  |    |
  -----
    |
  -----
  |    |
  R_Boot
  |    |
  -----
    |
   ---
   GND
```

### 2. **Formula Using Ohm's Law:**

Ohm's law states that \( I = \frac{V}{R} \), where \( I \) is the current, \( V \) is the voltage, and \( R \) is the total resistance.

In this case, the total resistance \( R_{Total} \) is the sum of the resistances of the gloves, the body, and the boots:

\[
R_{Total} = R_{Glove} + R_{Body} + R_{Boot}
\]

The current \( I \) flowing through the circuit can be calculated using Ohm's law:

\[
I = \frac{V}{R_{Total}} = \frac{V}{R_{Glove} + R_{Body} + R_{Boot}}
\]

### **Explanation:**

- **\( R_{Glove} \):** Represents the resistance of the gloves, which limits the current flow.
- **\( R_{Body} \):** Represents the body's resistance, which also contributes to limiting the current.
- **\( R_{Boot} \):** Represents the resistance of the boots, providing additional protection.

The more the resistance (due to gloves, boots, etc.), the lesser the current flowing through the body, thereby providing greater protection against electrical shock.

---

Do you want any further details or explanations?

Here are some related questions for you to consider:
1. How do different materials affect the resistance of gloves and boots?
2. What are the standard resistance values for different types of insulation?
3. How does moisture affect the resistance of insulated gloves and boots?
4. Can you calculate the current for specific values of \( V \), \( R_{Glove} \), \( R_{Body} \), and \( R_{Boot} \)?
5. How does the thickness of insulation impact overall resistance?

**Tip:** Always ensure that insulated gloves and boots are dry and in good condition to maintain their resistance properties and provide adequate protection.

Learn how to draw an equivalent circuit and derive the formula from Ohm's law for a person wearing insulated gloves and boots. Understand how resistances of gloves, boots, and body affect electrical current, providing protection against shocks.

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