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Question

The resistance of Resistor A is 4 times greater than the resistance of Resistor B, if resistance A and B are connected in series then compare the following
1. Currents through these resistors (IA and IB, respectively)
2. The voltage drops across them (VA and VB, respectively)

A
IA=IB and VA=VB
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B
IA=IB and VA=4VB
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C
IA=IB and VB=4VA
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D
IA=4IB and VA=4VB
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E
IB=4IA and VB=4VA
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Solution

The correct option is A IA=IB and VA=4VB
Here, RA=4RB
Since the resistances A and B are connected in series so the same current will pass through them. Thus, IA=IB
By Ohm's law, VA=IARA=4IBRB=4VB

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