Physics Short Questions “ELECTROMAGNETISM” Notes

Q. 44 Name the essential parts of a CRO ?

Explain the working principle of CRO ?

Q. 46 What voltages are required to•

1-       Heat the filament F

.2- Accelerate electrons between filament .`F’ and anode.

Q. 47 What should be the orientation of .a current carrying coil in a magnetic field So that torque

acting upon the coil is (a) maximum (b) minimum?

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