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Define the relationship between joule and erg using the equation.

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 It is given that 1 newton (1N) = 105 dyne, while 1m = 102 cm. So, if

Work= forces × displacement, then

1 joule = 1 newton × 1 m

1 joule = 105 dyne × 102 cm

= 107 dyne cm.

Hence, 1 joule = 10erg.

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