| ppefmh | Ed | Garstin | 2/2 | The diagram below shows a circuit with two lamps in series. These two lamps are not identical. |  | 93 | 8 | 85 | | |
-
Lamp A
-
Lamp B
|
-
The potential difference across the cell is [x]V, lamp A has [y]V. The potential difference must be shared between the two lamps. Therefore lamp B[z] has a higher voltage and must be brighter.
-
The potential difference across the cell is [x]V, lamp A has [y]V. The potential difference must be the same between the two lamps. Therefore lamp B[z] has the same voltage and must be the same.
-
The potential difference across the cell is [x]V, lamp A has [y]V. The potential difference must be shared between the two lamps. Therefore lamp B[z] has a lower voltage and must be less bright.
| 100% |
| ppefmh | Ed | Garstin | 1/2 | The diagram below shows a circuit with two lamps in series. These two lamps are not identical. | | 76 | 2 | 85 | 74 | Incorrect |
-
Lamp A
-
Lamp B
|
-
The potential difference across the cell is [x]V, lamp A has [y]V. The potential difference must be shared between the two lamps. Therefore lamp B[z] has a higher voltage and must be brighter.
-
The potential difference across the cell is [x]V, lamp A has [y]V. The potential difference must be the same between the two lamps. Therefore lamp B[z] has the same voltage and must be the same.
-
The potential difference across the cell is [x]V, lamp A has [y]V. The potential difference must be shared between the two lamps. Therefore lamp B[z] has a lower voltage and must be less bright.
| 50% |
