1. most ammeter's binding post are made of heavy, bare metal whereas voltmeter terminals are usually lighter and well insulated. explain why this is desirable??
2. an ammeter and voltmeter of suitable ranges are to be used to measure the current and voltage of an electric lamp. if a mistake was made and the meters were interchanged, what will happen??
3. some types of fuses used to protect electric meters have resistances of several ohms. is this objectionable (a) in ammeter circuits and (b) in voltmeter circuits? why??
2. an ammeter and voltmeter of suitable ranges are to be used to measure the current and voltage of an electric lamp. if a mistake was made and the meters were interchanged, what will happen??
3. some types of fuses used to protect electric meters have resistances of several ohms. is this objectionable (a) in ammeter circuits and (b) in voltmeter circuits? why??