A power chord is just a 5th note interval, just the root note and a 5th note. Typically, played on the heaviest strings. A power chord is neither major nor minor. For power chords, your index finger is always the root note. The great thing about power chords is they are completely portable.

G Power Chord
C Power Chord
F Power Chord

You can also add octaves to make them sound heavier like below.

Power Chord Root on 6th
Power Chord Root on 5th
Power Chord Root on 4th

You can also add a 2nd octave as well. Basically, making a G5 chord twice. Sounds very heavy.

Power Chord with added octaves
Power Chord with added octaves

Other interesting shapes are below.

Power Chord
Power Chord

Don’t forget the good ol’ boogie-woogie below.

Power Chord
Power Chord

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Octave Shapes

Octave Shapes

B Minor Scale

The notes of the B Minor Scale are B, C#, D, E, F#, G, A. The Chords in the B Minor scale are: Minor Dim Major Minor Minor Major Major

Major Scale Triads

A Major Scale Triads 1st Inversion 4th String SetE--5--7--9--10--12--14--16--B--5--7--9--10--12--14--15--G--6--7--9--11--13--14--16--D---------------------------A---------------------------E---------------------------A Major Scale Triads 2nd Inversion 4th String SetE--9---10--12--2--4--6--7--B--10--12--14--3--5--7--9--G--9---11--13--2--4--5--7--D--------------------------A--------------------------E--------------------------A Major Scale Triads Root Inversion 4th String SetE--0--2--4--5--7--9---10--B--2--3--5--7--9--10--12--G--2--4--6--7--9--11--13--D-------------------------A-------------------------E-------------------------A Major Triads All StringsE--0--5--9---B--2--5--10--G--2--6--9---D------------A------------E------------E------------B--2--5--10--G--2--6--9---D--2--7--11--A------------E------------E------------B------------G--2--6--9---D--2--7--11--A--4--7--12--E------------E------------B------------G------------D--2--7--11--A--4--7--12--E--5--9--12-- B