Department of Pre-University Education, Karnataka course PUC Karnataka Science Class 12
Share

# The Plate Current in a Diode is Zero. It is Possible that (A) the Plate Voltage is Zero (B) the Plate Voltage is Slightly Negative (C) the Plate Voltage is Slightly Positive - Physics

ConceptConcept of Semiconductor Electronics: Materials, Devices and Simple Circuits

#### Question

The plate current in a diode is zero. It is possible that _____________ .

(a) the plate voltage is zero
(b) the plate voltage is slightly negative
(c) the plate voltage is slightly positive
(d) the temperature of the filament is low

#### Solution

(a) the plate voltage is zero
(b) the plate voltage is slightly negative
(c) the plate voltage is slightly positive
(d) the temperature of the filament is low

The plate current varies directly with the plate voltage. Therefore, if the plate voltage is zero, the plate current is also zero. Due to the same reason, if the plate voltage is negative, the plate current will be zero. Now, if the plate is slightly positive, then it may be the reason that the plate voltage is not able to reduce the effect of space charge. Hence, the current may be zero. Now, as the temperature of the filament is low, it will not be able to emit electrons and the resulting plate current will be zero. Hence, all the options are possible.

Is there an error in this question or solution?

#### APPEARS IN

Solution The Plate Current in a Diode is Zero. It is Possible that (A) the Plate Voltage is Zero (B) the Plate Voltage is Slightly Negative (C) the Plate Voltage is Slightly Positive Concept: Concept of Semiconductor Electronics: Materials, Devices and Simple Circuits.
S