1.Which of the following is the essential element for batteries used in electric cars? [A] Magnesium [B] Lithium [C] Sodium [D] Bromine Show Answer
Most of today's all-electric vehicles and PHEVs use lithium-ion batteries, though the exact chemistry often varies from that of consumer electronics batteries. Research and development are ongoing to reduce their relatively high cost, extend their useful life, and address safety concerns in regard to overheating.
