You must stop at the intersection and proceed when you are aware that other turning or approaching vehicles,bicycles or pedestrians have stopped.
The voltage on a resistor will be "12 V".
According to the given question,
Current,
Power,
As we know the formula,
→ 
or,
→ 
By putting the giving values, we get
→ 
→ 
Thus the solution above is right.
Learn more about voltage here:
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It should be either windows 98 or windows xp but I think it is windows xp