Question
A parallel combination of three resistors takes a current of $7.5 \mathrm{~A}$ form a $30 \mathrm{~V}$ supply, It the two resistors are $10 \Omega$ and $12 \Omega$ find which is the third one?(A) $4 \Omega$(B) $15 \Omega$(C) $12 \Omega$(D) $22 \Omega$
Step 1
5 \, \mathrm{A}$ and the voltage $V$ is $30 \, \mathrm{V}$. We can find the total resistance $R$ of the parallel circuit using Ohm's law $V = IR$. Rearranging for $R$, we get $R = \frac{V}{I}$. Show more…
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