# Peak current during discharge

1. Mar 22, 2012

### Ryantruran

1. The problem statement, all variables and given/known data

When a person shuffles across a dry carpet, their body can be modeled as a charge 100-pF capacitance with one end grounded. Then, if the person touches a grounded metallic object such as a water faucet, the capacitance is discharged and the person experiences a brief shock. Typically, the capacitance may be charged to 20,000 V and the resistance (mainly of one's finger) is 100Ω. Determine the peak current during the discharge and the time constant of the shock.

So,
C=100 pF
V=20,000 V
R= 100 Ω

2. Relevant equations

T=RC

3. The attempt at a solution

just stuck at the peak current during discharge

2. Mar 22, 2012

### Staff: Mentor

Well, when the "switch closes", so to speak, what initial voltage sees what resistance in its path on its way to ground?

3. Mar 22, 2012

### Ryantruran

200 a ?

4. Mar 22, 2012

### Staff: Mentor

Make that 200 A (capital A for Amperes) and I'll agree

5. Mar 22, 2012

### Ryantruran

I attempted three times to make it capital. not sure why it wont let me. Thanks for the help