It is required to make a Christmas tree garland of 6V bulbs so that it can be plugged
| March 9, 2021 | education
It is required to make a Christmas tree garland of 6V bulbs so that it can be plugged into a 120V network. How many bulbs you need to take for this.
To find the required number of bulbs required to make a Christmas tree garland, we will use the formula: U = U1 + U2 + U3 + … + Uk = k * U1, from where we will express: k = U / U1.
Variable values: U – mains voltage (U = 120 V); U1 is the calculated voltage of one light bulb (U1 = 6 V).
Calculation: k = U / U1 = 120/6 = 20 pcs.
Answer: You need to take 20 bulbs.
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