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7.A voltmeter has a range 0-V with a series resistance R. With a series resistance 2R , the range is 0-V' is (1)V'=2V (2) V'>2V (3)V'>>2V (4) V'

Answer» 7.A voltmeter has a range 0-V with a series resistance R. With a series resistance 2R , the range is 0-V' is (1)V'=2V (2) V'>2V (3)V'>>2V (4) V'<2V


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