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Electric cooker switches

Arran Cameron
I hope that this doesn't come across as a daft question...


Why do most electric cooker switches have an in-built socket? Do analogous cooker switches exist in other countries that use different types of mains sockets?


I used to think that the socket was for plugging in a gas cooker electric ignition, but there is no real reason for having a separate circuit from the ring main for this.
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    Legh Richardson:


    Out of interest, if I placed a steel bar between two induction hob hot plates what might happen?

    Try it and find out! Induction hobs work using the principle of mutual resistance - yes, such a thing does exist in addition to mutual inductance. The pan (or steel bar) functions as both the secondary winding of a transformer connected to a resistive load. The mutual resistance is the value of a resistor that if it replaced the induction coil it would dissipate the same amount of power that the pan dissipates.
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    Legh Richardson:


    Out of interest, if I placed a steel bar between two induction hob hot plates what might happen?

    Try it and find out! Induction hobs work using the principle of mutual resistance - yes, such a thing does exist in addition to mutual inductance. The pan (or steel bar) functions as both the secondary winding of a transformer connected to a resistive load. The mutual resistance is the value of a resistor that if it replaced the induction coil it would dissipate the same amount of power that the pan dissipates.
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