1) When 14 C of charge flows through a component in 20 s, the current in the component is equal to: a) 34 A b) 0.7 A c) 280 A d) 1.43 A 2) A current of 0.2 A flows through a light bulb for 60 s. How much charge passes through in this time? a) 62 C b) 0.003 C c) 12 C d) 300 C 3) Which component lets electric current go through in one direction only? a) diode b) resistor c) thermistor d) motor 4) An ammeter connected in series to a filament lamp and a 4.5 V battery reads 0.6 A. What is the resistance of the lamp? a) 2.7 Ω b) 7.5 Ω c) 0.13 Ω d) 5.1 Ω 5) Which of the following is the unit of power? a) watt b) joule c) ohm d) volt 6) A current of 0.5 A flows through a 20 Ω resistor. Calculate the potential difference across the resistor. a) 25 V b) 0.025 V c) 40 V d) 10 V 7) A kettle has electrical resistance of 12 Ω. What is the value of current flowing through the kettle when it is connected to 230 V mains electricity? a) 19.2 A b) 0.052 A c) 2760 A d) 218 A 8) A battery provides 30 J of energy for every one coulomb of charge. What is the voltage of the battery? a) 10 V b) 30 V c) 300 V d) 230 V 9) A hairdryer of power rating of 1800 W has been connected to 230 V. What is the current in the hairdryer? a) 0.12 A b) 7.8 A c) 414 A d) 2030 A 10) Additional lamps connected in series: a) decrease the total resistance b) do not change the total resistance c) increase the total resistance
0%
Electrical circuits
共享
共享
共享
由
Msalaga
KS4
Y10
Y11
Physics
Science
编辑内容
嵌入
更多
排行榜
显示更多
显示更少
此排行榜当前是私人享有。单击
,共享
使其公开。
资源所有者已禁用此排行榜。
此排行榜被禁用,因为您的选择与资源所有者不同。
还原选项
随堂测验
是一个开放式模板。它不会为排行榜生成分数。
需要登录
视觉风格
字体
需要登录
选项
切换模板
显示所有
播放活动时将显示更多格式。
打开结果
复制链接
删除
恢复自动保存:
?