When 10V dc is applied to the vertical deflection plates of a cathode ray tube, the bright spot moves 1cm away from the center. If 20V (rms) ac is applied, then the movement of the spot will be nearly (no voltage is applied to the X-plates)
A vertical line 4 cm long
2 cm
4 cm
A vertical line approximately 5.6 cm long
Boost your performance with adaptive practice tests
Practice every concept in the syllabus
Compare your speed and accuracy with your peers
Download the app and practice on the go