1.

Define emf.

Answer»

Solution :Electromotiye force or emf is defined as the WORK DONE by the chemical force to move unit positive charge from negative terminal to pasitive terminal of the battery.
`" emf "epsilon=(W)/(q)=(F_(E)d)/(q)`
Where. `F_(e)` is electric force
d is the distance between the terminals
q is the charge
The S.I unit of emf is 'Volt'.


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