500ma保险丝等于多少A，500ma等于多少a

1，500ma等于多少a

你说的a是Amp吗？ 500mA=0.5A

500ma等于多少a

2，12V500MA 和12V2A是一样的吗

不一样。12VX0.5A（500mA)=6W 12VX 2A=24W .两个供电功率不一样。

12V500MA 和12V2A是一样的吗

3，500ma等于多少安

1A = 1000mA500mA = 0.5A注意 A 需要大写才表示安培

0.5安

500ma等于多少安

4，usb输出5v500ma是多少a

500mA=0.5A，这一般是指最大输出电流。会根据设备的功耗保持电压不变，输出不同的电流变化

没看懂什么意思？

5，500mAuA

500mA=500000uA 180mA=0.18A=180000uA 6500uA=6.5mA=0.0065A 0.5uA=0.0005mA=0.0000005A 1A=1000mA=1000000uA

500000 0.18 180000 6.5 0.0065 0.0005 0.0000005

6，500mAA 510 4 AmA

（1）500mA=500×1×10 -3 A=0.5A，500mA=500×1×10 3 μA=5×10 5 μA；（2）5×10 4 μA=5×10 4 ×1×10 -3 mA=50mA，5×10 4 μA=5×10 4 ×1×10 -6 A=0.05A．故答案为：0.5；5×10 5 ；50；0.05．

①∵1μa=10-3ma，∴5×102μa=5×102×10-3ma=0.5ma；∵1μa=10-6a，∴5×102μa=5×102×10-6a=5×10-4a；②∵1a=103ma，∴0.03a=0.03×103ma=30ma；∵1a=106μa，∴0.03a=0.03×106μa=30000μa．故答案为：0.5；5×10-4；30；30000．

7，过流保险管的规格有多少A

3.5A,4A,5A,6.3A)125V/250V,Fast Acting, Cartridge Glass Tube Fuse with Pigtail,UL/CSA Approved慢速熔断保险丝,快速熔断保险丝,单体玻璃陶瓷管保险丝,双帽引线玻璃陶瓷管保险丝,单帽引线玻璃陶瓷管保险丝,外焊弯脚玻璃陶瓷管保险丝BGF,BGP,BTF,BTP,φ4.5x15mm无铅环保快熔电流保险丝4.6 x 16mm, F (32mA,50mA,100mA,125mA,160mA,200mA,250mA,300mA,315mA,350mA,375mA,400mA,500mA,630mA,750mA,800mA,1A,1.25A,1.6A,2A,2.5A,3A,3.15A,3.5A,4A,5A,6A,7A,8A,10A)125V/250V,Fast Acting, Cartridge Glass Tube Fuse/ with Pigtail, UL/CSA/PSE Approved慢速熔断保险丝,快速熔断保险丝,单体玻璃陶瓷管保险丝,双帽引线玻璃陶瓷管保险丝,单帽引线玻璃陶瓷管保险丝,外焊弯脚玻璃陶瓷管保险丝CIS,CSP,SIC,SIP,TSD,SGP,FSC,TSC,φ5x20mm无铅环保快熔电流保险丝5.2 x 20mm, F (32mA,50mA,100mA,125mA,160mA,200mA,250mA,300mA,315mA,350mA,375mA,400mA,500mA,630mA,750mA,800mA,1A,1.25A,1.6A,2A,2.5A,3A,3.15A,3.5A,4A,5A,6A,7A,8A,10A,20A,25A,30A)125V/250V,Fast Acting, Cartridge Glass Tube Fuses/with Pigtail, UL/CSA/PSE Approved慢速熔断保险丝,快速熔断保险丝,单体玻璃陶瓷管保险丝,双帽引线玻璃陶瓷管保险丝,单帽引线玻璃陶瓷管保险丝,外焊弯脚玻璃陶瓷管保险丝MGC,MGP,MDC,MDP,6C,6CP,6H,6HP,无铅环保快熔电流保险丝6.35 x 30mm, T (32mA,50mA,100mA,125mA,160mA,200mA,250mA,300mA,350mA,375mA,400mA,500mA,630mA,750mA,800mA,1A,1.25A,1.6A,2A,2.5A,3A,3.5A,4A,5A,6A,7A,8A,10A,12A,15A,20A,25A,30A)125V/250V,Time Lag, Cartridge Glass Tube Fuse, PSE Approved6.35 x 31.75mm, F (32mA,50mA,100mA,125mA,160mA,200mA,250mA,300mA,350mA,375mA,400mA,500mA,630mA,750mA,800mA, 1A,1.25A,1.6A,2A,2.5A,3A,3.5A,4A,5A,6A,7A,8A,10A,12A,15A,20A,25A,30A)125V/250V,慢速熔断保险丝,快速熔断保险丝,单体玻璃陶瓷管保险丝,双帽引线玻璃陶瓷管保险丝,单帽引线玻璃陶瓷管保险丝,外焊弯脚玻璃陶瓷管保险丝

看是什么电器和什么电路!你描述一下我才能回答你!