It is required to make a Christmas tree garland of 5 V bulbs so that it can be plugged into a 220 V
| April 24, 2021 | education
It is required to make a Christmas tree garland of 5 V bulbs so that it can be plugged into a 220 V network. How many bulbs will this require?
Data: Ul (calculated voltage of each taken light bulb) = 5 V; Ug (garland resistance) = 220 V.
Required bulbs: N = Ug / Ul = 220/5 = 44 pcs.
Answer: It requires 44 bulbs.
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