I think electricity is one of the greatest innovations in history. Electricity has become a prominent part of modern life and one cannot think of a world without it. Lighting, AC, fans, mobile phones, TV, radio, domestic appliances and computers directly or indirectly depend on electricity. Various sectors developed because of electricity: cinema, electric trains and communication are a few examples. We can't neglect the pivotal role of electricity in the field of medicine. Many machines like x-ray, ECG and MRI machines are operated with electricity. The last sentence could also be “…machines exist because of electricity” depending on what you mean

I think electricity is one of the greatest innovations in history. Electricity has become a prominent part of modern life and one cannot think of the world without it. Lighting, Air conditioners (AC), fans, mobile phones, TV, radio, domestic appliances and computers directly or indirectly depend on the electricity. Various sectors developed because of electricity. Cinema, electric train and communication are a few examples. We can't neglect the pivotal role of electricity in the field of medicine. Many machines like x-ray, ECG and MRI are operated with electricity. Avoid using A lot of abbreviations when writing an essay. Write the full meaning then put the abbreviation in bracket ().