2005 Jun 1;71(11):2188-2190. One of the most common diagnoses in primary care is cellulitis. Streptococcus sp. and Staphylococcus aureus are the most common etiologic organisms of cellulitis and usually respond to empiric antibiotics. A seven- to 10-day regimen is the recommended treatment. However, uncomplicated cellulitis has a strong inflammatory response with a low yield for bacteria in the affected area.
To start, letâs measure voltage on a AA battery: Plug the black probe into COM and the red probe into mAVÎ©. Set the multimeter to â2Vâ in the DC (direct current) range. Almost all portable electronics use direct current), not alternating current. Connect the black probe to the batteryâs ground or â-â and the red probe to power or â+â.
A voltmeter is used to measure potentials as shown in Figure 1. The voltmeter has two clips that are colored red and black. When the red clip is connected to the anode and the black clip is connected to the cathode, a positive voltage is detected as shown in Figure 1. If the clips are backwards, a negative voltage is detected. In order to practice using the voltmeter, you can measure the potential of a closed battery. Turn on the meter and if it is not set to voltage push the + button once or twice. 1) Measure the potential difference of a AA (1.5 V) battery.