Current Electricity and Electrical InstrumentHard
Question
Eels are able to generate current with biological cells called electroplaques . Theelectroplaques The electroplaques is an eel are arranged in 100 rows, aech row stretching horizontally along the body of the fish containing 5000 electroplaques . The arrangement is suggestively shown below. Each electroplaques has an emf of 0.15V and internal resistance of 0.25Ω. The water surrounding the eel completes a circuit between the head and its tail. if the water surrounding it has a resistance of 500Ω, The current an eel can produce in water is about :
Options
A.1.5 A
B.3.0 A
C.15 A
D.300 A
Solution
It is an example of mixed arrangement. Total potential = 0.15 × 5000 = 750V.
Resistance per row = 0.25 × 500 = 1250Ω
Thereare100 rows, so
Total resistance =
= 12.5Ω
It is connecyed with external resistance of 500Ω, so
Total resistance = 500 + 12.5 = 512.5Ω
Current =
= 1.5
Resistance per row = 0.25 × 500 = 1250Ω
Thereare100 rows, so
Total resistance =
= 12.5ΩIt is connecyed with external resistance of 500Ω, so
Total resistance = 500 + 12.5 = 512.5Ω
Current =
= 1.5Create a free account to view solution
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