Electric current on wire carrying unit of energy is removable (10)

I believe the answer is:

eradicable

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'removable' is the definition.
(similar in meaning)

'electric current on wire' is the wordplay.
'electric' becomes 'erad' (I can't explain this - if you can you should give a lot more credence to this answer).
'current' becomes 'I' (symbol for electric current).
'on' says to put letters next to each other.
'wire' becomes 'cable' (cable is a kind of wire).
'erad'+'i'+'cable'='ERADICABLE'

'carrying unit of energy is' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.

Can you help me to learn more?

I've seen this clue in The Hindu.

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