Dear Apu Sarkar,

Yes, electrical and electronics engineering is useful in data Science. The main area is IOT (Information Of Things). You can make great things in order to collect a huge amount of data with arduinos and with more complex electronics as fpgas. My friends worked in renewable energies and they develop Hardware to collect data from our devices. With that data, in order to save it, you con use software (databases, distributed systems as hadoop) and apply easy algorithms to learn hoy your device work. It is a huge area to learn.

If you have also any queries, feel free to ask !