As you build circuits, you will alter voltage, which is the variable. you will measure how changing the voltage affects the current, which is the variable. a “constant” is a parameter that stays the same regardless of the other variables, and in this case, is held constant.

Independent, dependent, resistance

Explanation:

An independent variable is the one which is varied to test changes in the dependent variable. In the given experiment, voltage is an independent variable is which is being varied and it's effect on current (dependent variable) is being tested. Resistance being held constant.

According to Ohm's Law, current is proportional to voltage.

V = I R

R is resistance

Independent, dependent, resistance

Explanation:

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

your answer is c! hope this : )