2 Electricity

Practice questions on Electricity

• A student notices that the plastic insulation on a mains cable has been damaged, exposing … (4 marks, Explain)
• A washing machine has a metal casing and is connected to the mains electricity supply usin… (4 marks, Explain)
• A hairdryer has a plastic casing and is sold as a double-insulated appliance. Explain why … (4 marks, Explain)
• A student runs a plastic comb through their dry hair several times. The comb then attracts… (4 marks, Explain)
• When an aircraft is being refuelled, a large amount of static charge can build up on the a… (4 marks, Explain)
• A plastic rod is rubbed with a cloth. After rubbing, the rod is found to carry a negative … (4 marks, Explain)
• A student sets up a circuit containing a battery, a motor, and a lamp connected in series.… (4 marks, Explain)
• A torch uses a 6 V battery and contains a filament lamp connected in series with two ident… (4 marks, Explain)
• A kettle has a metal casing and is connected to the mains electricity supply using a three… (4 marks, Explain)
• A fuse and a circuit breaker can both be used as safety devices in mains electrical applia… (4 marks, Explain)
• A electric drill has a metal casing and is connected to the mains electricity supply using… (4 marks, Explain)
• A student connects a buzzer to a battery in a simple series circuit. The potential differe… (4 marks, Explain)
• A 12 V battery is connected to two resistors in series. One resistor has a potential diffe… (4 marks, Explain)
• A student connects a 9 V battery to three identical lamps in series. Each lamp has a poten… (4 marks, Explain)
• A toaster has a metal casing and is connected to the mains electricity supply using a thre… (4 marks, Explain)
• A lawnmower has a metal casing and is connected to the mains electricity supply using a th… (4 marks, Explain)
• A student rubs a woollen jumper against a balloon. The balloon is then held close to, but … (4 marks, Explain)