Protection from EMP?

Are all modern solid state electronics susceptible to EMP?

Do they have to be on, having electricity circulating in the ciruit at the time of EMP burst in order to be affected?

If a computer is not turned and is disconnected from the power outlet, with only its cmos battery power, will it be affected by EMP?

Will a regular portable radio without the battery in be affected? Or do I need to store it in a Faraday cage?

Protection from EMP?computer repair

There are two effects to protect from.

1) EMP which will induce currents in the circuitry and fry them whether the equipment is on of off. This can be guarded against with a faraday cage.

2) The burst of radiation. This can turn transistors on and will damage the circuit if it is switched on at the time of the burst, otherwise it is harmless. A faraday cage has no effect on this. Lead, concrete do though, but you need to be near the explosion for this to be a problem. EMP has a much wider range.

So the best thing is to keep you transistor radio switched off in a metal biscuit tin if you are worried.

Protection from EMP?free antivirus

All transistorized materials will be affected. I did hear once that Soviet planes had radio tubes in them instead of transistors. The Department of Defense wondered why they still used radio tubes and finally figured it out, they wouldn't be affected by an electromagnetic pulse.
A Faraday cage (even the most secure) will probably not be sufficient. I can assure you that the government would be able to tell you exactly what measures are necessary against what strength of EMP, but those are not the kinds of secrets they want out.