电阻元件R=10Ω,电压U=100V ,则有功功率P=(____)。
A1000$;$1000W$;$1000VA$;$1000var
B1000$;$1000W$;$1000VA$;$1000var
C1000$;$1000W$;$1000VA$;$1000var
D1000$;$1000W$;$1000VA$;$1000var
A1000$;$1000W$;$1000VA$;$1000var
B1000$;$1000W$;$1000VA$;$1000var
C1000$;$1000W$;$1000VA$;$1000var
D1000$;$1000W$;$1000VA$;$1000var