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Physics electrician electric power calculation problem! ~ ~ urgent online! When a small bulb marked "6V 0.5A" is connected to the circuit with 3A current, how much resistance should it be connected in parallel for normal operation? Detailed! Process!
Known: lamp current: I1 = 0.5A, lamp voltage: U1 = 6V
Parallel: U2 = U1 = 6V
I2 = I total - I1 = 3a-0.5a = 2.5A
R2 = U2 / I2 = 6V / 2.5A = 2.4 Ω
In general, the electrician term "load size" refers to the size of a equivalent resistance B actual electric power C actual voltage D load current
Our electrician foundation teacher said to choose B, while our electronic circuit teacher said to choose D
The load does work by consuming energy, so the size of the load is expressed by power. Generally, the load has rated voltage, so the current can determine the power
For example: two motors, one is 380V, 1 A; the other is 220V, 1.5 A; it is wrong to judge the load only by the current
What is the symbol for centigrade temperature? What is the unit?
The temperature in centigrade is expressed by T symbol, and the unit is degree (℃)
The unit of temperature in centigrade is (), expressed by the symbol ℃
ditto
Centigrade
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