(HELP ASAP! FIRST TO ANSWER CORRECTLY GETS BRAINLIEST! GOOD LUCKK!!) In 2-3 complete sentences, explain the differences between AC and DC power and analyze why AC is used more frequently.

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In direct current (DC), the electric charge (current) only flows in one direction. Electric charge in alternating current (AC), on the other hand, changes direction periodically. The voltage in AC circuits also periodically reverses because the current changes direction.

AC analysis gives the voltage or current versus frequency in a linearized version of the circuit. DC analysis gives DC voltage or current, usually versus a stepped voltage or current.

The basic difference between ac and dc current is that AC current reverses its direction while flowing in a circuit, while DC current does not change its direction. The alternating current generates frequency while direct current has zero frequency.

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.