In this work we present an experiment to study the resonance curves of coupled RLC circuits with variable coupling strength. The inductive coupling can be easily varied and measured for the different configurations. Our setup allows us to explore thoroughly the variation of the resonance frequencies as a function of the coupling strength between the oscillators. This system can be used to illustrate the effect of eigenfrequency repulsion when an interaction couples different modes of oscillation. This effect is prevalent in many classical and quantum mechanical systems. The experiment is conceptually simple