(1)剪取一段镍铬丝,刮掉其两端的
(2)请用笔画线代替导线将图乙的实物电路连接完整
(3)闭合开关前,将滑动变阻器的滑片移到最
次数 | 1 | 2 | 3 |
电压/V | 0.6 | 1.2 | 1.6 |
电流/A | 0.14 | 0.30 | |
电阻/Ω | 4.3 | 4.0 | |
电阻平均值/Ω |
(5)为了得到所需3Ω的电阻,接下来的操作应为:
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