Question

如圖電阻箱的讀數(shù)是________Ω．電壓表的讀數(shù)是________V．

Answer 1

7408    12.5
分析：根據(jù)對(duì)應(yīng)的倍數(shù)的指針?biāo)鶎?duì)的數(shù)字進(jìn)行電阻箱的讀數(shù)．根據(jù)電壓表的量程和分度值讀數(shù)．
解答：電阻箱的×1000的位置對(duì)應(yīng)的數(shù)是7，×100的位置對(duì)應(yīng)的數(shù)是4，×10的位置對(duì)應(yīng)的數(shù)是0，×1的位置對(duì)應(yīng)的數(shù)是8，故是7408Ω．
電壓表使用的是0-15V的量程，分度值為0.5V，讀數(shù)為12.5V．
故本題答案為：7408；12.5．
點(diǎn)評(píng)：本題考查了電阻箱和電壓表的讀數(shù)方法．