10. A given power supply is capable of providing 6 A for 3.5 h. Its ampere-hour rating is
A. 58 Ah
B. 0.58 Ah
C. 2.1 Ah
D. 21 Ah
10. A given power supply is capable of providing 6 A for 3.5 h. Its ampere-hour rating is
A. 58 Ah
B. 0.58 Ah
C. 2.1 Ah
D. 21 Ah