What is the current in the following diode circuit?

What is the zener current in the following circuit ?

What is the current in the following junction diode circuit?

Calculate the current l in the following circuit, if all the diodes are ideal. All resistances are 200 Omega

The circuit has two oppositely connected ideal diodes in parallel. What is the current flowing in the circuit ? .

The circuit has two oppositely connected ideal diodes in parallel. What is the current flowing in the circuit ?

The circuit has two oppositely connected ideal diodes in parallel. What is the current flowing in the circuit?

The circuit has two oppositely connected ideal diodes in parallel. What is the current flowing in the circuit ?

The circuit has two oppositely connected ideal diodes in parallel. What is the current flowing in the circuit?

The circuit has two oppositely connected ideal diodes in parallel. What is the current flowing in the circuit?