A typical value of resting membrane potential is

Options

A. `-100 mV`
B. `-70 mV`
C. `-40 mV`
D. `-60 mV`

Explanation

### Step-by-Step Solution:

1. **Understanding Resting Membrane Potential**:
- The resting membrane potential refers to the electrical potential difference across a neuronal membrane when the neuron is not actively transmitting signals.
- In this state, the inside of the neuron is negatively charged compared to the outside.

2. **Identifying the Components**:
- The neuronal membrane separates two environments: the intracellular (inside the neuron) and extracellular (outside the neuron).
- The typical charge distribution is that the inside of the neuron is negative relative to the outside.

3. **Typical Value**:
- The typical value of the resting membrane potential is measured in millivolts (mV).
- For most neurons, this value is approximately -70 mV, indicating that the inside of the neuron is 70 millivolts less than the outside.

4. **Conclusion**:
- Therefore, the answer to the question "A typical value of resting membrane potential is" is **-70 mV**.

### Final Answer:
The typical value of resting membrane potential is **-70 mV**.

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