In a circuit shown below, the resistance are given in
ohm and the battery is assumed ideal with emf equal
to 3 V. The voltage across the resistance R4 is?
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Answer:
V4 = 0.4V
Explanation:
Equivalent resistance of the given network
Req =75Ω
∴ Total current through battery i= 3/75
i1 =i2 =3/75×2 =3/150
Current through R4 = 3/150 × 60/(30+60)
= 3/150 × 60/90
= 2/150 A
V4 = i4 × R4 = 2/150×30 =2/5V =0.4V
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