JEE Main | 2018Current Electricity and Electrical InstrumentHard

Question

The reading of the ammeter for a silicon diode in the given circuit is :-

Options

15 mA

11.5 mA

13.5 mA

Solution

Silicon diode is in forward bias.
Hence across diode potential barrier
$âˆ†$ V = 0.7 volts
$I = \frac{V - âˆ† V}{R} = \frac{3 - 0.7}{200}$
$= \frac{2.3}{200} = 11.5 Â m A$

Create a free account to view solution

View Solution Free

Topic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions

More Current Electricity and Electrical Instrument Questions

In the previous question find the resistance between points 1 - 3....The balancing length is obtained at 78.4 cm length while measuring the potential difference at the ends of a resistance ...Find the value of e.m.f. (ε1) in a circuit in Figure if the current in circuit remains unchanged by connecting it a...Consider the following two statements. (A) Kirchhoff′s junction law follows from the conservation of charge (B) Ki...The value of total resistance between x and y in ohm is :-...