Help me with this please

Question

When a 20 V battery is hooked up to a 10 Ω resistor in a circuit, how much current flows through the circuit?

0.5 A

2 A

20 A

200 A

Answer 1

wouldn't it be b?

Answer 2

V = i R
20 = i (10)
i = 2 amps
so yes, b

Answer 3

ok, thanks :)