Question

Two resistors of resistance $5\Omega$ and $15\Omega$ are connected in parallel to a $15volt$ battery. Find the current across $5\Omega$ resistor.

• A. $1A$
• B. $3A$
• C. $2A$
• D. $4A$

Answer 1

The correct option is B

$3A$

Since resistors are connected in parallel, potential difference across each resistor is same.
$\therefore$Potential difference across resistors $5\Omega$ and $15\Omega$ is $15volts$.

Using ohm’s law,

$V=IR$

$15V=I\times 5\Omega$

$I=3A$

Hence the value of current through $5\Omega$ resistor is $3A$.