Question

Can the phenomenon of resonance be exhibited in RL or RC circuit?

Answer 1

For resonance we need $two$ quantities having $oscillation$ in their value.

But in $RL$ only the $L$ will get change in its inductive reactance with frequency but R has no change with frequency.

Similarly in $RC$ circuit only the $C$ will get change in its capacitive reactance with frequency but R has no change with frequency.