PHY
Homework 27

# Homework 27 - homework 27 KANUNGO ANIL Latest unpenalized...

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homework 27 – KANUNGO, ANIL 1 Latest unpenalized work: Nov 7 2007 Wednes- day 04:00 (after this date you can not make a perfect score). Work cutoff: Nov 8 2007, 4:00 am. Question 1, chap 32, sect 1. part 1 of 2 10 points An AC power supply produces a maximum voltage of 135 V. This power supply is con- nected to a 26 Ω resistor, and the current and resistor voltage are measured with an ideal AC ammeter “A” and an ideal AC voltmeter “V”, as in the figure. V A E = E max sin ωt E max = 135 V S 26 Ω What does the voltmeter read? Note: Re- call that an ideal ammeter has zero resistance and an ideal voltmeter has infinite resistance. Answer in units of V. Question 2, chap 32, sect 1. part 2 of 2 10 points What is the reading of the ammeter? Answer in units of A. Question 3, chap 32, sect 1. part 1 of 3 10 points An rms potential difference of 137 V is placed across a light bulb with a resistance of 32 Ω. What is the rms current in the light bulb?

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