Three resistors of resistances 3Ω,4Ω and 5Ω are combined in parallel. This combination is connected to a battery of emf 12V and negligible internal resistance, current through each resistor in ampere is?
  • a)
    4, 3, 2.4
  • b)
    8, 7, 3.4
  • c)
    2, 5, 1.8
  • d)
    5, 5, 8.2
Correct answer is option 'A'. Can you explain this answer?

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Answers

Since the voltage across the circuit is constant Then current through 3Ω resistor

The current through 4 £2 resistor 

and the current through 5 £2 resistor,

Since the voltage across the circuit is constant Then current through 3Ω resistorThe current through 4 £2 resistorand the current through 5 £2 resistor,
Since the voltage across the circuit is constant Then current through 3Ω resistorThe current through 4 £2 resistorand the current through 5 £2 resistor,