The manufacturer of an electrical heater says that no more than one heater should be linked to the mains wiring through a single fuse. With just one heater in the circuit, the current is $9\,\text{A}$. The fuse rating is $10\,\text{A}$. Even though this warning is given, a second identical heater is connected, as shown. When the switch is closed, the fuse blows. The fuse is then changed for a $20\,\text{A}$ fuse. What occurs when the switch is closed?
- AEach heater only receives half the correct current.
- BEach heater receives twice the correct current.
- CThe circuit wiring connecting the heaters to the mains may overheat.
- DThe fuse melts when the heaters are switched on.