Question
Download Solution PDF10 cells each with an EMF of 1.5 V and an internal resistance of 0.1 Ω are connected in series. What will be the total EMF and resistance of the circuit?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConnection of cells
1.) Series connection
The current remains the same and the total current in the connection is equal to the current through each cell.
The total voltage across the combination is the sum of the voltage across each cell.
The total resistance across the combination is the sum of the resistance of each cell.
2.) Parallel connection
The voltage remains the same and the total voltage across the connection is equal to the voltage across each cell.
The total current across the combination is the sum of the current across each cell.
The resistance in the case of parallel connection is:
Calculation
Given, E = 1.5 V
r = 0.1Ω
n = 10
Eeq = 1.5 × 10 = 15 V
req = 0.1 × 10 = 1Ω
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