In the below fig. the values of the resistances are 50 Ω for resistor A, 100Ω for resistor B, and 300 Ω for resistor C. The battery has a voltage V = 15 V. Find the current in resistor C.

A 2 m long wire is perpendicular to a magnetic field of 0.3 T.  If the wire experiences a force of 0.56 N, calculate the current in the wire.

Two capacitors of capacitance 9 uF and 12 uF are connected in series and a 20 V battery.  Find the equivalent capacitance. 

Two point charges are located on the x-axis.  Charge q1 = 3 uC (u = 10^-6) is located at the origin and the second charge is at x = 0.4 m.  Find the value and sign of the second charge if it is experiencing an electric force of 0.23 N directed to the right.

Two point charges are located on the x-axis. Charge q1 = 6 uC is located at the origin and charge q2 = -3 uC is located at x = 2 m.  Find the work required to bring in a 2 uC charge from far away and place it at y = 1 m on the y-axis (point (0,1)). 

Two charged parallel plates are separated by 2 cm. The plates are charged and create a uniform electric field of 600 N/C between the plates.  If a 3 uC charge of mass 3 g is placed at the positive plate and released from rest, what will be its speed when it reaches the negative plate? (This is the same setup as last question)

Carbidopa is added to Levodopa therapy in the treatment of Parkinson’s Disease because it: 

 A potentially irreversible side effect associated with haloperidol (Haldol ®) and other similar typical antipsychotic drugs is:

 ________ is a drug used in the treatment of Parkinson’s Disease because in addition to experiencing a loss of dopamine cells, patients with PD have an increase in ________ influence in the substantia nigra.

The mechanism of action of amphetamine includes all of the following EXCEPT: