Radio-frequency types of these devices can be made with the Ayrton-Perry winding method. The MELF type of these devices are used over normal surface mount examples of them when higher performance is needed. Preventing floating pins from appearing on a microcontroller can be accomplished with the “pull-up” and “pull-down” types of these devices. (10[1])Rheostats and potentiometers are variable examples of these circuit (10[2])elements, (10[1])whose strength and tolerance are often indicated with a series of up to six parallel (10[1])colored bands. (10[2])An ideal (10[1])voltmeter (10[1])would behave as an infinitely strong one of these circuit elements, which are usually symbolized (10[1])with a jagged line. For 10 points, name these circuit elements that oppose the flow of electrical current. ■END■