The unit of reactance is

What is the dimension of impedance?

The phase difference between current and voltage in an $AC$ circuit is $\pi/4$. If the frequency is $50\, Hz$,what is the time difference?

In an $A.C.$ circuit,the reactance of a coil is $\sqrt{3}$ times its resistance. The phase difference between the voltage across the coil and the current through the coil will be

If an $8\,\Omega$ resistance and $6\,\Omega$ reactance are present in an $ac$ series circuit,then the impedance of the circuit will be......$\Omega$.

What is capacitive reactance? Write its unit.