Description of prediction in interval voltage(Duplicates possible).
| Interval | Circuit switch | Keyword | Number of answers(%) | |||
| Elementary Middle school(12) | High school (22) | Pre-service teachers(11) | Total (45) | |||
| a-b | Open | Connection of switch | 3(25.0%) | 8(36.4%) | 3(27.3%) | 14(31.1%) |
| The flow of electric current | 6(50.0%) | 10(45.5%) | 4(36.4%) | 20(44.4%) | ||
| Resistance | 2(16.7%) | 6(27.3%) | 1(9.1%) | 9(20.0%) | ||
| Battery | 1(8.3%) | 4(18.2%) | 1(9.1%) | 6(13.3%) | ||
| Magnitude of electrical energy | 0(0.0%) | 2(9.1%) | 1(9.1%) | 3(6.7%) | ||
| Others | 3(25.0%) | 0(0.0%) | 1(9.1%) | 4(8.9%) | ||
| Close | Connection of switch | 2(16.7%) | 7(31.8%) | 2(18.2%) | 11(24.4%) | |
| The flow of electric current | 5(41.7%) | 10(45.5%) | 3(27.3%) | 18(40.0%) | ||
| Resistance | 5(41.7%) | 7(31.8%) | 2(18.2%) | 14(31.1%) | ||
| Battery | 2(16.7%) | 6(27.3%) | 3(27.3%) | 11(24.4%) | ||
| Magnitude of electrical energy | 0(0.0%) | 0(0.0%) | 2(18.2%) | 2(4.4%) | ||
| Others | 3(25.0%) | 1(4.5%) | 1(9.1%) | 5(11.1%) | ||
| b-c | Open | Connection of switch | 2(16.7%) | 9(40.9%) | 3(27.3%) | 14(31.1%) |
| The flow of electric current | 3(25.0%) | 8(36.4%) | 4(36.4%) | 15(33.3%) | ||
| Resistance | 6(50.0%) | 8(36.4%) | 3(27.3%) | 17(37.8%) | ||
| Battery | 1(8.3%) | 1(4.5%) | 1(9.1%) | 3(6.7%) | ||
| Magnitude of electrical energy | 0(0.0%) | 2(9.1%) | 0(0.0%) | 2(4.4%) | ||
| Others | 2(16.7%) | 0(0.0%) | 0(0.0%) | 2(4.4%) | ||
| Close | Connection of switch | 0(0.0%) | 6(27.3%) | 2(18.2%) | 8(17.8%) | |
| The flow of electric current | 3(25.0%) | 4(18.2%) | 2(18.2%) | 9(20.0%) | ||
| Resistance | 8(66.7%) | 12(54.5%) | 6(54.5%) | 26(57.8%) | ||
| Battery | 1(8.3%) | 1(4.5%) | 2(18.2%) | 4(8.9%) | ||
| Magnitude of electrical energy | 0(0.0%) | 0(0.0%) | 0(0.0%) | 0(0.0%) | ||
| Others | 3(25.0%) | 4(18.2%) | 0(0.0%) | 7(15.6%) | ||
| c-d | Open | Connection of switch | 5(41.7%) | 10(45.5%) | 5(45.5%) | 20(44.4%) |
| The flow of electric current | 6(50.0%) | 11(50.0%) | 6(54.6%) | 23(51.1%) | ||
| Resistance | 1(8.3%) | 0(0.0%) | 0(0.0%) | 1(2.2%) | ||
| Battery | 0(0.0%) | 0(0.0%) | 0(0.0%) | 0(0.0%) | ||
| Magnitude of electrical energy | 0(0.0%) | 2(9.1%) | 0(0.0%) | 2(4.4) | ||
| Others | 1(8.3%) | 0(0.0%) | 0(0.0%) | 1(2.2%) | ||
| Close | Connection of switch | 3(25.0%) | 8(36.4%) | 1(9.1%) | 12(26.7%) | |
| The flow of electric current | 5(41.7%) | 7(31.8%) | 4(36.4%) | 16(35.6%) | ||
| Resistance | 4(33.3%) | 3(13.6%) | 3(27.3%) | 10(22.2%) | ||
| Battery | 0(0.0%) | 1(4.5%) | 1(9.1%) | 2(4.4) | ||
| Magnitude of electrical energy | 0(0.0%) | 0(0.0%) | 0(0.0%) | 0(0.0%) | ||
| Others | 3(25.0%) | 4(18.2%) | 3(27.3%) | 10(22.2%) | ||
| d-e | Open | Connection of switch | 4(33.3%) | 7(31.8%) | 3(27.3%) | 14(31.1%) |
| The flow of electric current | 7(58.3%) | 10(45.5%) | 7(63.6%) | 24(53.3%) | ||
| Resistance | 0(0.0%) | 2(9.1%) | 0(0.0%) | 2(4.4%) | ||
| Battery | 0(0.0%) | 0(0.0%) | 0(0.0%) | 0(0.0%) | ||
| Magnitude of electrical energy | 0(0.0%) | 2(9.1%) | 1(9.1%) | 3(6.7%) | ||
| Others | 1(8.3%) | 1(4.5%) | 0(0.0%) | 2(4.4%) | ||
| Close | Connection of switch | 2(16.7%) | 4(18.2%) | 1(9.1%) | 7(15.6%) | |
| The flow of electric current | 3(25.0%) | 9(40.9%) | 4(36.4%) | 16(35.6%) | ||
| Resistance | 4(33.3%) | 5(22.7%) | 2(18.2%) | 11(24.4%) | ||
| Battery | 1(8.33%) | 1(4.5%) | 2(18.2%) | 4(8.9%) | ||
| Magnitude of electrical energy | 0(0.0%) | 0(0.0%) | 1(9.1%) | 1(2.2%) | ||
| Others | 4(33.3%) | 3(13.6%) | 1(9.1%) | 8(17.8%) | ||
| e-a | Open | Connection of switch | 4(33.3%) | 10(45.5%) | 6(54.5%) | 20(44.4%) |
| The flow of electric current | 5(41.7%) | 8(36.4%) | 5(45.5%) | 18(40.0%) | ||
| Resistance | 0(0.0%) | 1(4.5%) | 0(0.0%) | 1(2.2%) | ||
| Battery | 3(25.0%) | 9(40.9%) | 2(18.2%) | 14(31.1%) | ||
| Magnitude of electrical energy | 1(8.3%) | 2(9.1%) | 0(0.0%) | 3(6.7%) | ||
| Others | 2(16.7%) | 0(0.0%) | 0(0.0%) | 2(4.4%) | ||
| Close | Connection of switch | 1(8.3%) | 8(36.4%) | 3(27.3%) | 12(26.7%) | |
| The flow of electric current | 4(33.3%) | 5(22.7%) | 3(27.3%) | 12(26.7%) | ||
| Resistance | 2(16.7%) | 4(18.2%) | 2(18.2%) | 8(17.8%) | ||
| Battery | 6(50.0%) | 8(36.4%) | 5(45.5%) | 19(42.2%) | ||
| Magnitude of electrical energy | 0(0.0%) | 0(0.0%) | 1(9.1%) | 1(2.2%) | ||
| Others | 3(25.0%) | 3(13.6%) | 1(9.1%) | 7(15.6%) | ||