序号 | ||||||
1 | 5 | 1.1 | 5 | 1.1 | 10 | 2.2 |
2 | 5 | 0.8 | 10 | 1.6 | 15 | 2.4 |
3 | 4 | 0.5 | 16 | 2.0 | 20 | 2.5 |
4 | 5 | 0.6 | 15 | 1.9 | 20 | 2.5 |
5 | 8 | 1.0 | 12 | 1.5 | 20 | 2.5 |
(1)分析上述实验数据,除了能得到的规律外,小宁还发现:
①与之间存在着下列关系:
②当不变时,两端的电压大小不变;当发生变化时,大小
(2)断开开关S,拆除,将和并联后接到之间,闭合开关S。求:
①两点之间的电压为多少?
②内,电流通过做的功为多少?
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2