eshow 3 resistance of 1 ohm ,3 ohm,4 ohm connected to a cell of e.m.f. 2v and internal resistance 2.0 ohm . a. calculate the total resistance of the circuit. b. what reading will be shown by the ammeter. c. what reading will be shown by the ammeter if a similar cell is connected in series with the given cell ?
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Since figure is not given assuming resistances to be arranged in parallel manner in first case
Equivalent resistance by 3 external resistors
Also
ε=I(R+r)
Where
ε is EMF of cell
I is current
R is external resistance
r is internal resistance
substituting the values
we get
2=I(
2=I()
38=I(50)
I=
For 2nd part you can just simply calculate the equivalent resistance in series and substitute in formula again TO GET THE ANSWER
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