A high voltage will certainly damage a low voltage appliance and perhaps set fire to other things nearby.
No, 120 v is not enough.
UK is 220v
yes.
No, it is not safe to operate a 120V lamp with a 240V bulb in Europe simply by using a plug adapter. The lamp is designed to work at a specific voltage, and using a higher voltage bulb can overload the lamp, potentially causing it to overheat or malfunction. It is important to use the correct voltage lamp for the specific electrical system in which it will be used.
You don't, at least, not legally.
You will burn up your appliance!!!!!
Brazil has a nominal voltage of 220/380V.
No. Attempting to run an appliance on insufficient voltage can cause damage to the appliance and can be dangerous. Call an electrician and get him to install a 220v plug
Connecting a 220V appliance to a 110V power source can damage the appliance and potentially cause a fire. The appliance is designed to run on 220V input, so using a lower voltage can overload its components. It's important to use the correct voltage to ensure safe and proper operation.
The voltage isn't a problem, you can run 220 from your house and use that to run a European appliance, the problem is whether the appliance is dependant on line HZ. European is 50HZ and US is 60HZ. If the appliance specifies 220/50HZ, it will probably give you trouble here. If it says 220V/50 or 60HZ
For residential service 110V, 115V, 117V, 120V, and 125V are all functionally the same. Electric companies have been slowly increasing the line voltage over the last 100 years to cope with increased loads. That is where these different voltages come from. The tolerance is generally +/-10%. That's +/- 11.5 volts in this case. So, a 115VAC appliance will run between 103.5 and 126.5VAC. The short answer is yes. 110V appliances can work with up to 130V without being burnt, additionally, 220V appliances can work with up to 240V without being burnt.