# Exercise 6

Calculate the geometric factors, measured voltage differences and signal-to-noise ratio (SNR, the ratio of the field measured voltage difference to the noise) for a Wenner and dipole-dipole array based on the information given (fill out the table below).

Current injected [*I*]: 2 mA

Apparent resistivity [*ρ*]: 250 ohm-m

Noise level: 15 mV

Array |
a(m) |
n |
K_{g} |
V(mV) |
SNR |

Wenner | 5 | – | |||

Dipole-dipole | 3 | 3 |