Final answer:
To determine the current through the music dock, the formula P = IV is used, where P is the power (46 watts) and V is the voltage (230 volts). The calculation yields a current of 0.2 amperes.
Step-by-step explanation:
To calculate the current through the music dock, we use the formula for power: P = IV, where P is power in watts (W), I is current in amperes (A), and V is voltage in volts (V).
Given that the dock transfers 46J of energy per second (which is 46 watts of power, since 1 watt = 1 joule/second) and it uses a 230V mains supply, we can rearrange the formula to solve for I, the current: I = P/V = 46W/230V.
Therefore, the current through the dock is 0.2 amperes.