Sentence:  For if I knew the secret of letting this power in my body <WSD>change</WSD> directly into electricity , I could rent myself out to the electric companies and with just the power in my body I could light all the lights and run all the factories in the entire United States for some days . 
Meaning of the word marked with <WSD> tags:  undergo a change; become different in essence; losing one's or its original nature