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Hello, this is 6 Minute English from BBC Learning English, I'm Neil.
And I'm Georgina.
How Georgina, what do you know about ACDC?
You mean the Australian rock and roll band?
Well, the 1979 hit Highway to Hell stayed at number one for 11 weeks.
No, no, no, not that ACDC, Georgina.
I'm not talking rock music here, I'm talking electrical currents, alternating current AC and direct current DC, the two ways in which electricity flows.
Oh, I see, no, I don't know anything about that ACDC.
Well, don't worry because in today's programme we'll be finding out some quirky facts about electricity, how it differs across the world
and why some countries have more complicated electrical systems than others.
Mm, I have noticed that when I travel to another country I need a converter plug to connect my laptop.
Is that something to do with ACDC?
Yes, it could be.
Of course, electricity itself doesn't change from country to country.
No, it's an invisible natural force at work in everything from lightning storms to the electrical sparks firing in our brains.
But although it happens naturally,
one scientist was credited with discovering electricity.
Who, that's my quiz question, who discovered electricity?