Blackboard Leam x d Cheap Tickets: Flights, Hot X The Expert TAI Human-lik X AC
ID: 1438044 • Letter: B
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Blackboard Leam x d Cheap Tickets: Flights, Hot X The Expert TAI Human-lik X AC Chegg Study l Guided Solux Schris Brown vs Drake IDrax S3 Who's hotter Drake vs. Ch YouTube tomp3 Converte x x https:// usi38ok.theexpertta.com /Common/TakeTutorial Assignment.aspx Home I Stude joshuaquansah@rocketmail.com My Account Log Out Class Management I Help Homework 6 Begin Date: 2/28/2016 12:00:00 AM Due Date: 3/16/2016 5:00:00 PM End Date: 3/23/2016 5:00:00 PM Prob 10: If you try and f a battery connected in series, you won't get a completely accurate measurement because of the internal resistance of the battery. To see how large this effect is, consider trying to measure the terminal voltage of a 1.585 V alkaline cell having an internal resistance of 47 by placing a 1.05 k2 voltmeter across its terminals. Randomized Variables 1.05 Assignment Status 47 Click h emf iled Otheexpertta.com A 33% Part (a) What current flows in A? Problem Status Grade Summary Completed Deductions tial. Completed Completed sino coso tano 7 8 9 HOME Sub Completed Attempts remaining (0% per attempt 1 2 3 atano acotano si iled Completed cosh( tanho cotanho BACESPACE CLEAR Degrees O Radians Parti Hint I Submit give up! 10 Hints deduction per h H Feedback: 0% deduction per feedback. 12 A 33% Part (b) Find the terminal voltage in V 13 Completed A 33% Part (c) To see how close the measured terminal voltage is to the emf calculate their ratio. 14 3:54 AM SO M m Cortana. Ask me anything 3/16/2016Explanation / Answer
a)
Net resistance of the ckt, Rnet = r + R
= 47 + 1050
= 1097 ohms
so, I = Vemf/Rnet
= 1.585/1097
= 1.445*10^-3 A
b)
V_terminal = Vemf - I*r
= 1.585 - 1.445*10^-3*47
= 1.517 volts
c)
v_terminal/Vemf = 1.517/1.585
= 0.957
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