Diagnostic Test 2

$R_1=10\Omega$

$R_2=20\Omega$

V=25V

What is the current through the battery in the above circuit?

There are 3 resistors in series. Their resistances are, in order, $2\Omega$, $4\Omega$, and $6\Omega$. The total potential drop is 12V. What is the potential drop across the second resistor?