How can the rate of emission of electrons in a cathode ray tube can be increased?

Increasing resistance of filament

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Increasing filament current

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Decreasing filament current

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Increasing magnetic field inside tube

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B Increasing filament current
Rate of emission of electrons can be increased by increasing the temperature and temperature of cathode can be increased by increasing the filament current.

Suggest Corrections

Similar questions

i

d

V

i

\frac{i}{2}

V

2 V

d

\frac{d}{2}

In a cathode ray tube, the filament is made up of tungsten because

Join BYJU'S Learning Program