If a current of 2 amps is moving through a circuit connected to a 9 v battery, what is the resistance of the circuit? ? 4.5 ohms 18 ohms 0.2 ohms 7 ohms i think that the answer might be d because 9-2 is 7? but i really don't know, if someone could explain how they got their answer that'd be great. millions.

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.