When a lead-acid battery is in fully charged condition, the color of its positive plate is__________?

A. Lead-acid battery
B. Nickel-iron battery
C. Dry cell battery
D. Silver oxide battery

A. increase the voltage rating
B. increase the current rating
C. increase the life of the cells
D. none of the above

A. increases
B. decreases
C. remains the same
D. becomes zero

A. output voltage
B. temperature of electrolyte
C. specific gravity of electrolyte
D. none of the above

A. Manganese-alkaline
B. Carbon-zinc
C. Lithium
D. Mercury

A. Lithium
B. Zinc-chloride
C. Mercury
D. Carbon-zinc