1) When was the first solar - PG&E, Pacific Gas and Electric

 1) When was the first solar electric cell made? a. 1854 b. 1910 c. 1953 d. 1975

C: 1953.

Solar electricity has been developing for over 50 years.

2) How much of the total sunlight falling on earth would we have to capture to supply the world's electrical needs for one year?

a. One hour b. One day c. One week d. Six months

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