“Well, according to many the reason for the issur of electricity is that it produces a spark. I am pretty sure that when using a device like a laptop computer or cell phone, no spark is produced.
Maybe people who text on Shabbos feel this way.
(the spark is produced by flipping a switch and completing a circuit. Cell phones don’t work that way, I think.)”
Bob said to ask a rabbi. Bob, i ask a rabbi a question i have in torah or halacha, not a question i have in electricity. Rabbis aren’t electricians.
I found the question on a website where they have people who are knowledgeble of the subject of electricity answering questions. Here are two answers that i found:
“Electronic switches produce no spark”
and
“1. Light switches actually connects a circuit PHYSICALLY. This can create a spark. You cann test this at night, slowly move a light switch on (try to get it right in the middle). You will see sparks at the switch as it connects the circuit.
2. Modern computers and electronics use an ELECTRONIC circuit to connect the the power, so there is not a physical on/off. When you press the power button a microchip connects the power without a significant spark”
I am not allowed to post the link here, but they are clearly saying that there is no spark in an electronic circuit used in computers and other electronics