The candidates were required to
- connect the circuit as shown and obtain current readings;
- calculate the slope of the graph and comment on the shape of the graph;
- compare the values of I in Table 1 with values of I in Table 2.
The expected answers were:
Voltage Reading (V) |
Ammeter Reading (mA) |
0 |
0.000 |
2 |
333.300 |
4 |
666.600 |
6 |
1000.000 |
8 |
1333.300 |
10 |
1666.700 |
12 |
2000.000 |
The candidates connected the two lamps correctly in parallel and obtained readings of the current. However, most of the readings were not correct due to their inability to read correctly the measuring instruments, thus taking a toll on the table obtained for the experiment.