Which delivers more?

Exercise and reference answers

Questions

1. A

   Alkaline cell energy

   B

   Zinc-carbon cell energy

   Higher value

   Alkaline cell energy

2. A

   Fuel cell efficiency

   B

   Engine efficiency

   Higher value

   Fuel cell efficiency

3. A

   Lithium cell, 3.7 V

   B

   Lead acid cell, 2 V

   Higher value

   Lithium cell, 3.7 V

4. A

   Car battery, 12 V

   B

   Lithium cell, 3.7 V

   Higher value

   Car battery, 12 V

Instructions

Tap the option with the larger value.

Explanation