# Quiz: Quantum Gates and Circuits

This quiz will test your understanding of quantum gates and circuits.

1

What happens when the Hadamard Gate $H$ is applied twice to a qubit that is in the $\frac{|0\rangle+|1\rangle}{\sqrt{2}}$ state?

A)

The qubit goes to state $|-\rangle$.

B)

The qubit goes to state $|+\rangle$.

C)

The qubit goes to state $|++\rangle$.

D)

We cannot say for sure which state the qubit will end up in.

Question 1 of 50 attempted

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