

(1)实验中有一根导线连接错误,请在连接错误的导线上画“×”并用笔划线代替导线完成电路的正确连接
(2)闭合开关前滑动变阻器的滑片位置应放在
(3)实验数据如下表所示,在完成第1次实验后,若还需测量小灯泡的额定功率,需将滑动变阻器滑片向

实验次数 | 电压 | 电流 | 电功率 | 灯泡亮暗情况 |
1 | ![]() | 0.28 | 0.56 | 较暗 |
2 | ![]() | 正常发光 | ||
3 | ![]() | 0.34 | 0.95 | 较亮 |

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

