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Determine the potential difference. V across the parallel resistors

Physics
WAEC 2010

Determine the potential difference. V across the parallel resistors

  • A. 2.0V
  • B. 2.3V
  • C. 3.0V
  • D. 0.7V
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Correct Answer: Option B
Explanation

6Ω and 4Ω are parallel.

\(\frac{1}{R_T}\) = \(\frac{1}{R_1} + \frac{1}{R_2}\)

\(\frac{1}{R_T}\) = \(\frac{1}{6} + \frac{1}{4}\) 

\(R_T\) = \(\frac{12}{5}\) = 0.97Ω

  V = IR

 = 0.97 x 2.4 = 2.3V


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