A rechargeable torch is charged from a 6.0 V supply. The charging current is 0.50 A, and 9.0 kJ of energy is transferred to the torch. Using E=IVtE=IVtE=IVt, how long does the charging take?
50 min50\ \mathrm{min}50 min
300 min300\ \mathrm{min}300 min
0.050 min0.050\ \mathrm{min}0.050 min
3000 min3000\ \mathrm{min}3000 min
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.