The Russian Civil War. After the overthrow of the Provisional Government on 7th November, 1917, the All-Russian Congress of Soviets met and handed over power to the Soviet Council of People's Commissars.
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.
2 Answers. Any battery has two end terminals - one is positive and the other is negative. Every time you connect a wire to the battery, there are electrons speeding up from the negative end to the positive end. This creates a chemical reaction and the battery works!