Assume the resistance values are and the battery emf is In the figure below, wha

Question

Assume the resistance values are

and the battery emf is

In the figure below, what is the current through the battery and resistor R1? Hint: First redraw the circuit so that the parallel and series resistor combinations are more obvious.
A

Assume the resistance values are R1 = 2,200 ?, R2 = 1,200 ?, R3 = 4,400 ?, and R4 = 6,100 ?, and the battery emf is epsilon2 = 3.0 V. In the figure below, what is the current through the battery and resistor R1? Hint: First redraw the circuit so that the parallel and series resistor combinations are more obvious.

Explanation / Answer

R2 R3and R4 in parallel

1/ R = 1/R2+1/R3+1/R4

R = 816.63 ohm

Re = R1+R = 816.63 + 2200 = 3016.632 A

the current through R1 will be same as the current from battery

i = V/Re = 3/2016.632 = 0.9945x10^-3 A

i = 0.9945 mA

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