A series RC circuit has R = 5 Ω and C = 10 µF. The current in the circuit is 5sin20000t. The applied voltage is

A. $$25\sqrt 2 \sin \left( {20000t + {{45}^ \circ }} \right)$$

B. $$25\sqrt 2 \sin \left( {20000t - {{45}^ \circ }} \right)$$

C. $$25\sqrt 2 \sin 20000t$$

D. $$25\sqrt 2 \sin \left( {20000t - {{90}^ \circ }} \right)$$

Answer: Option B