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Class 12 Physics (India)

Course: Class 12 Physics (India) > Unit 3

Lesson 9: Series and parallel resistors
Science
Class 12 Physics (India)
Current electricity
Series and parallel resistors
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Finding currents and voltages (mixed circuits)

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Problem

In the circuit shown below, four resistors, R, start subscript, 1, end subscript, R, start subscript, 2, end subscript, R, start subscript, 3, end subscript, and R, start subscript, 4, end subscript, are connected to a cell of voltage, V, equals, 4, space, start text, V, end text.
R, start subscript, 1, end subscriptR, start subscript, 2, end subscriptR, start subscript, 3, end subscriptR, start subscript, 4, end subscript
3, space, \Omega12, space, \Omega8, space, \Omega2, space, \Omega
What is the potential difference, V, start subscript, 4, end subscript, across R, start subscript, 4, end subscript?
V, start subscript, 4, end subscript, equals
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, start text, p, i, end text or 2, slash, 3, space, start text, p, i, end text
start text, V, end text
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