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 (10[1])“pull-up” and “pull-down” (10[1])types of these (10[1])devices. (10[1])Rheostats and potentiometers are variable examples (10[1])of these (10[1])circuit elements, whose strength and tolerance (10[1])are often indicated with a series of (10[1])up to six parallel colored (10[1])bands. An (10[1])ideal voltmeter would behave as an infinitely strong one of these circuit elements, which are usually (10[1])symbolized with a jagged line. (10[1])For 10 points, name these circuit elements (10[1])that oppose the flow of electrical current. ■END■