Question

If the forward bias on p-n junction is increased from zero to $0.045V$, then no current flows in the circuit. The contact potential of junction i.e. $V_B$ is

• A. zero
• B. $0.045V$
• C. more than $0.045V$
• D. less than $0.045V$

Answer 1

The correct option is B $0.045V$

When no current flows at the junction plane, then contact potential of junction plane is equal to the forward voltage applied $=0.045V$