General Knowledge :: Physics
- Which of the following is a device designed to protect electrical devices from voltage spikes?
- The working of the quartz crystal in the watch is based on the
- At low temperature, Lead behaves as a :
- The device which transfer the signal from low resistance region to high resistance region is
- The purpose of choke in a fluorescent lamp is :
- An electron and a proton starting from rest get accelerated through potential difference of 100 kV. The final speed of the electron and the proton are Ve and Vp respectively. Which of the following relations is correct?
- Superconductors are those elements
- A device used for converting a.c. into d.c. is called
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