3 Electric circuits

Practice questions on Electric circuits

• A factory uses an electric motor to lift heavy crates from the ground floor to a storage s… (5 marks, Explain)
• A filament lamp is connected to a battery in a simple circuit. The battery has an electrom… (5 marks, Explain)
• A wind turbine generates electricity and supplies it to a small village. Not all of the en… (5 marks, Explain)
• A tumble dryer uses electrical energy to dry clothes. The tumble dryer transfers 600 J of … (5 marks, Explain)
• A cyclist rides along a flat road and then applies the brakes to come to a stop. Explain w… (5 marks, Explain)
• A wind turbine generates electricity. Some of the energy input to the turbine is wasted. E… (5 marks, Explain)
• A student sets up a simple series circuit containing a battery, a switch and a lamp. When … (5 marks, Explain)
• A mobile phone battery transfers energy to the phone's components. Explain why the total e… (5 marks, Explain)
• A student is investigating ways to improve the efficiency of a model electric motor used t… (5 marks, Explain)
• A electric storage heater uses electrical energy to heat up special bricks overnight, when… (5 marks, Explain)