A fully charged rechargeable battery can transfer 4.32 kJ to a pump motor. The motor operates at a constant potential difference of 9.0 V. Each cycle consists of 6.0 minutes of pumping followed by 2.0 minutes on standby. The current in each mode is shown in the table.
| Mode | Current |
|---|---|
| Pumping | 0.40 A |
| Standby | 0.10 A |
For how many complete cycles can the pump operate?
105 exam-style questions on Edexcel GCSE Physics 10.3 Electrical energy and power, covering 10.3.1 The heating effect of an electric current, 10.3.2 Reducing energy transfer in wires, 10.3.3 Advantages and disadvantages of the heating effect, 10.3.4 Energy transferred by an electrical circuit, 10.3.5 Electrical power, and 10.3.6 Energy transfers in domestic devices. Each one has a worked solution and a mark scheme showing where the marks go.