1) What charge the electrons have? a) positive b) neutral c) negative 2) Who invented the battery? a) Alessandro Volta b) Thomas Edison c) Benjamin Franklin. 3) What is the most useful circuit? a) series circuit b) parallel circuit c) Congruence circuit d) electron circuit e) protons circuit 4) Who invented the light bulb? a) Alessandro Volta b) Thomas Edison c) Benjamin Franklin 5) What is the less efficient labels? a) A b) B c) C d) D

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