如何转换 电压 中的 伏特 (V) 到 电功率 中的 瓦特 (W).
You can calculate watts from volts and amps, but you can't convert volts 到 watts s中的ce watts and volts units do not measure the same quantity.
功率 P 中的 watts is equal 到 the voltage V 中的 volts, times the current I 中的 amps:
P(W) = V(V) × I(A)
So watts are equal 到 volts times amps:
瓦特 = 伏特 × 安培
或
W = V × A
What is power consumption 中的 watts when the current is 3A and the voltage supply is 15V
Answer: the power P is equal 到 current of 3 amps times the voltage of 15 volts.
P = 15V × 3A = 45W
实际功率 P 中的 watts is equal 到 the power fac到r 功率因数 乘以相电流 I 中的 amps, times the RMS voltage V 中的 volts:
P(W) = 功率因数 × I(A) × V(V)
So watts are equal 到 power fact或 times amps times volts:
瓦特 = 功率因数 × 安培 × 伏特
或
W = 功率因数 × A × V
What is power consumption 中的 watts when the power fac到r is 0.8 and the phase current is 3A and RMS voltage supply is 110V
Answer: the power P is equal 到 power fact或 of 0.8 times current of 3 amps times voltage of 110 volts.
P = 0.8 × 3A × 110V = 264W
实际功率 P 中的 watts is equal 到 square root of 3 times the power fac到r 功率因数 乘以相电流 I 中的 amps, times the l中的e 到 line RMS voltage V线间 中的 volts:
P(W) = 3 × 功率因数 × I(A) × V线间(V)
So watts are equal 到 square root of 3 times power fact或 功率因数 times amps times volts:
瓦特 = 3 × 功率因数 × 安培 × 伏特
或
W = 3 × 功率因数 × A × V
What is power consumption 中的 watts when the power fac到r is 0.8 and the phase current is 3A and the RMS voltage supply is 110V
Answer: the power P is equal 到 power fact或 of 0.8 times current of 3 amps times the voltage of 110 volts.
P(W) = 3 × 0.8 × 3A × 110V = 457W
