<Table> <Tr> <Th_colspan="2"> Electric charge </Th> </Tr> <Tr> <Td_colspan="2"> Electric field of a positive and a negative point charge </Td> </Tr> <Tr> <Th> Common symbols </Th> <Td> Q </Td> </Tr> <Tr> <Th> SI unit </Th> <Td> coulomb </Td> </Tr> <Tr> <Th> Other units </Th> <Td> <Ul> <Li> elementary charge </Li> <Li> faraday </Li> <Li> ampere - hour </Li> </Ul> </Td> </Tr> <Tr> <Th> In SI base units </Th> <Td> C = A s </Td> </Tr> <Tr> <Th> Extensive? </Th> <Td> yes </Td> </Tr> <Tr> <Th> Conserved? </Th> <Td> yes </Td> </Tr> <Tr> <Th> Dimension </Th> <Td> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Electric charge </Th> </Tr>

What is the sl unit of electric charge