변환 방법 전압 의 볼트 (V) 를 전력 의 와트 (W).
You can calculate watts from volts and amps, but you can't convert volts 를 watts s의ce watts and volts units do not measure the same quantity.
전력 P 의 watts is equal 를 the voltage V 의 volts, times the current I 의 amps:
P(W) = V(V) × I(A)
So watts are equal 를 volts times amps:
와트 = 볼트 × 암페어
또는
W = V × A
What is power consumption 의 watts when the current is 3A and the voltage supply is 15V
Answer: the power P is equal 를 current of 3 amps times the voltage of 15 volts.
P = 15V × 3A = 45W
유효 전력 P 의 watts is equal 를 the power fac를r 역률 에 상전류 I 의 amps, times the RMS voltage V 의 volts:
P(W) = 역률 × I(A) × V(V)
So watts are equal 를 power fact또는 times amps times volts:
와트 = 역률 × 암페어 × 볼트
또는
W = 역률 × A × V
What is power consumption 의 watts when the power fac를r is 0.8 and the phase current is 3A and RMS voltage supply is 110V
Answer: the power P is equal 를 power fact또는 of 0.8 times current of 3 amps times voltage of 110 volts.
P = 0.8 × 3A × 110V = 264W
유효 전력 P 의 watts is equal 를 square root of 3 times the power fac를r 역률 × 상전류 I 의 amps, times the l의e 를 line RMS voltage VL-L 의 volts:
P(W) = 3 × 역률 × I(A) × VL-L(V)
So watts are equal 를 square root of 3 times power fact또는 역률 times amps times volts:
와트 = 3 × 역률 × 암페어 × 볼트
또는
W = 3 × 역률 × A × V
What is power consumption 의 watts when the power fac를r is 0.8 and the phase current is 3A and the RMS voltage supply is 110V
Answer: the power P is equal 를 power fact또는 of 0.8 times current of 3 amps times the voltage of 110 volts.
P(W) = 3 × 0.8 × 3A × 110V = 457W
