When plate voltage in diode valve is increased from 100V to 150V. Then, plate increases from 7.5 mA to 12 mA, then dynamic plate resistance will be

10 k Ω

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

11 k Ω

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

15 k Ω

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

11.1 k Ω

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

Open in App

Solution

The correct option is C $11.1 k Ω$
The dynamic resistance of a diode valve is the ratio of small change in plate voltage to the small change in plate current i.e.
$r_{d} = \frac{Δ V}{Δ I}$
Given - $Δ V = 150 - 100 = 50 V; Δ I = 12 - 7.5 = 4.5 m A = 4.5 \times 10^{- 3} A$
Hence $r_{d} = \frac{50}{4.5 \times 10^{- 3}} = 11.1 \times 10^{3} Ω = 11.1 k Ω$

Suggest Corrections

Similar questions

The dynamic plate resistance of a triode valve is $10 k Ω$ Find the change in the plate current if the plate voltage is changed from 200 V and to 220 V.

Q. In space charge limited region, the plate current in a diode is

10 m A

for plate voltage

150 V

. If the plate voltage is increased to

600 V

, then the plate current will be:-

Q. The dynamic plate resistance of a triode value is 10 kΩ. Find the change in the plate current if the plate voltage is changed from 200 V to 220 V.

Q. The plate resistance and amplification factor of a triode are 10kΩ and 20. The tube is operated at plate voltage 250 V and grid voltage −7.5 V. The plate current is 10 mA. (a) To what value should the grid voltage be changed so as to increase the plate current to 15 mA? (b) To what value should the plate voltage be changed to take the plate current back to 10 mA?

The plate current in a diode is 20 mA when the plate voltage is 50 V or 60 V. What will be th ecurrent if the plate voltage is 70 V?

Join BYJU'S Learning Program

When plate voltage in diode valve is increased from 100V to 150V. Then, plate increases from 7.5 mA to 12 mA, then dynamic plate resistance will be

The correct option is C 11.1kΩThe dynamic resistance of a diode valve is the ratio of small change in plate voltage to the small change in plate current i.e. rd=ΔVΔIGiven - ΔV=150−100=50V;ΔI=12−7.5=4.5mA=4.5×10−3AHence rd=504.5×10−3=11.1×103Ω=11.1kΩ