[2](a)A current of 0.40 A flows through a resistor of resistance 15 Ω. Calculate the potential difference across the resistor.

[2](a)Two resistors of 6.0 Ω and 3.0 Ω are connected in parallel. Calculate the combined resistance.

[3](b)This parallel combination is connected in series with a 4.0 Ω resistor across a 12 V supply. Calculate the total resistance and the current drawn from the supply.

[2](a)A 2 kW electric kettle is used for 3 hours. Calculate the energy transferred, in kWh.

[2](b)Electricity costs 8 rupees per kWh. Calculate the cost of using the kettle for these 3 hours.

[2](a)State two safety features found in a UK/Indian domestic plug or circuit, and briefly explain what each one does.

[2](a)Calculate the current flowing through a 4 Ω resistor connected to a 12 V supply.

[2](a)An appliance is rated at 230 V, 2 A. Calculate its power.

[2](a)Calculate the power dissipated in a 10 Ω resistor carrying a current of 3 A, using P = I²R.

[2](a)Three resistors of 5 Ω, 7 Ω and 8 Ω are connected in series. Calculate the total resistance.

[2](a)A 1500 W heater is used for 2 hours. Calculate the energy transferred, in kWh.

[2](a)Explain the difference between how current behaves in a series circuit compared with a parallel circuit.