Name the instrument in which you observed the hysteresis loopa.Cathode Ray Tubeb.Multimeterc.Cathode Ray Oscilloscope

Below is an oscilloscope trace. What type of current produced it? Give the abbreviation, not the full name.

Electroscope is usedA)To detect and test small electric chargesB)To calculate the amount of electric charge flowing through the conductor inthe given interval of timeC)To find out the presence of antimatterD)To test the presence of magnetic field

The instrument used to measure high temperature in the furnace is

Which of the following is the most suitable instrument to measure the internal diameter of a test tube?

What is hysteresis loss?