need all parts (14%) Problem 6: Consider a large 1.54 V carbon-zinc dry cell use
ID: 1778877 • Letter: N
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need all parts
(14%) Problem 6: Consider a large 1.54 V carbon-zinc dry cell used in a physics lab to supply 2.2 A to a circuit. The internal resistance ofthe cell is 0.13 . - 33% Part (a) What is the terminal voltage, V. ofthe cell, in volts? 3396 Part (b) What is the total electric power, P. in watts, that the cell produces 33% Part (c) How much power, PL, in watts, is supplied to the external circuit? Grade Summary 0% 100% Potential Submissions Attempts remaining: 4% per attempt) cotan asinacos0 atan acotansinh0 cosh0 tanh0cotanh0 O Degrees O Radians etailed view 1 23 END Submit Hint I give up! Hints: 0% deduction per hint. Hints remaining- Feedback: 5% deduction per feedback. All content 2017 Expert IA, LLCExplanation / Answer
a)
terminal voltage will be somewhat less than the EMF of the battery as the battery is having an internal resistance.
V=E-IR
where V is the terminal voltage
E is the EMF
I is the current
R is the internal resistance.
So, V=1.54-2.2*.13
V=1.254V
b)
total electric power that cell produces,
P=EI
Where E is the EMF of the battery and I is the current
P=1.54*2.2
=3.388W
c)
power that it can deliver to external circuit will be
P=VI
=1.254*2.2
2.7588W
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