removed. How is the20. C An electroscope is a device used to measure the (relative)charge on an object (Fig. P23.20). The electroscope consists oftwo metal rods held in an insulated stand. The bent rod is fixed.and the straight rod is attached to the bent rod by a pivot. Thestraight rod is free to rotate. When a positively charged objectis brought close to the electroscope, the straight movable rodrotates. Explain your answers to these questions:a. Why does the rod rotate in Figure P23.20?b. If the positively charged object is removed, what happens tothe electroscope?c. If a negatively charged object replaces the positivelycharged object in Figure P23.20, what happens to the elec-troscope?d. If a charged object touches the top of the fixed conductingrod and is then removed, what happens to the electroscope?Some CheeugXメメメメ×0OWA would fran sfepom Hoe rodInsulating to t,estandelecttocothen movab leconductinarodFixedconductingrodMovableconductingrodFIGURE P23.20

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