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
共用
共用
共用
由
Msalaga
KS4
Y10
Y11
Physics
Science
編輯內容
嵌入
更多
排行榜
顯示更多
顯示更少
此排行榜當前是私有的。單擊
共用
使其公開。
資源擁有者已禁用此排行榜。
此排行榜被禁用,因為您的選項與資源擁有者不同。
還原選項
測驗
是一個開放式範本。它不會為排行榜生成分數。
需要登錄
視覺風格
字體
需要登錄
選項
切換範本
顯示所有
播放活動時將顯示更多格式。
打開結果
複製連結
刪除
恢復自動保存:
?