Lab & Pre-lab #5: Voltage

Fundamentals of Circuits III: Voltage & Ohm’s Law v 0.1Activity 1.2: Batteries in Series and ParallelThe predictions you make can be tested by measuring potential differences with the voltageprobes connected across the two points you want to measure the potential difference betweenas shown in Fig. 4.VP1(a)++A−−+−+−BVP2(b)VP1AB++−−+−+VP2VP1(c)++A−−++−BVP2−−Figure 4: Voltage probes connected to measure the potential difference across (a) single batteries,(b) a single battery and two batteries connected in series, and (c) a single battery andtwo batteries connected in parallel.Step 1: Open the experiment file L4A1-2 (Batteries).Step 2: Zero the probes. Make sure that they are not connected to anything.Step 3: Connect voltage probe l across a single battery (as in Fig. 4 (a) and voltage probe 2across the other battery.Step 4: Record the potential difference measured for each battery below.Potential difference of battery A:Potential difference of battery B:Question 1.6 How do your measured values agree with those marked on the batteries?Step 5: Next, connect the batteries in series as in Fig. 4 (b). Now connect probe 1 so itmeasures the potential difference across battery A and connect probe 2 so it measuresthe potential difference across the series combination of the two batteries. Record yourmeasurements below.Voltage of battery A:Voltage of A and B in series:PHYS-204:Physics II Laboratory 5