The trial process.1. draw a lamp with a telling difference in functionality. 2. using the screwdriver, check the power plug on the Czech 220 volts polarity which is a neutron and a pole line, draw and clear position.3. plug the bulb circuit.4. open the wit (open circuit), the led next to it? 5. turn off the switch (closed circuit) lamp next to it? 6. plug the circuit fluorescent tube lights, according to AC and then stick to it?
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