Question 50 of 50 32 65%
A current of 4 A flows through a resistor with a resistance of 12 0. Which symbol equation you would
use to calculate the power of this resistor?
POVI
P=1?R
P= IR?
Q=It

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current

Ithink it is a. but i'm not 100 percent sure.

Perpendicular to the wave motion 

An em wave does not require a medium, while a mechanical wave does.