(2)保持闭合、断开,多次调节电阻箱的阻值,记录每次调节后的电阻箱的阻值R及电流表A的示数I.为了直观地得到I与R的关系,该同学以电阻箱的阻值R为纵轴,以x为横轴作出了如图(b)的图像,则横轴x为
(3)若图(b)中横轴x所表示的物理量的单位为国际单位,由图像可求得电源的电动势
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