Question

1 joule is equal to how many erg

Answer 1

Hello User !!!

Erg and Joule are Units of Work and energy in different systems!!!

1 erg = g cm²/s²

1 Joule = Kg m²/s²


Dividing LHS and RHS

erg/ joule = [ g cm² / s² ] / [ Kg m² / s² ]

erg / joule = g cm² / kg m²

Converting Kg and m² to g and cm²

erg / joule = g cm² / 1000 × g × 10000 cm²

erg / joule = 1 / 10^{7)

1 joule = 10^{-7} erg



Here,

♦ Kg ==> Kilogram ==> Unit of Mass [ In MKS system and S.I ]

♦ g ==> Gram ==> Unit of Mass [ in CGS system ]

♦ s ==> Seconds ==> Unit of Time

♦ cm ==> Centimetre ==> Unit of Length [ In CGS system ]

♦ m ==> Metre ==> Unit of Length [ in MKS system and S.I ]

Answer 2

Answer:

1 joule = 10^7 erg