Shall we get electrical shock if we touch the positive
terminal of a 230 volt dc supply?

Answer Posted / anand yadav

Sure you will get shock.
+ve---||----earth-----||--- _ve

The insulated conductors form capacitors.

Think that two capacitors are in series, middle point is connected to ground and one to +ve, second to -ve (220V DC). Now you can see the voltage across each capacitor which will cause you electric shock.
To see practically, take one good digital multimeter (Fluke), check voltage between ground to +ve and ground to -ve, you will get half of the source voltage.

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