Motor Calculations

Can anyone answer this question?
The switch in with no flyback diode, has been closed for a long time, and
then it is opened. The voltage supply is 10 V, the motor’s resistance is R = 2 , the
motor’s inductance is L = 1 mH, and the motor’s torque constant is kt = 0.01 Nm/A.
Assume the motor is stalled.
a. What is the current through the motor just before the switch is opened?
b. What is the current through the motor just after the switch is opened?
c. What is the torque being generated by the motor just before the switch is opened?
d. What is the torque being generated by the motor just after the switch is opened?
e. What is the voltage across the motor just before the switch is opened?
f. What is the voltage across the motor just after the switch is opened?

Is this question related to using one of our products? This sounds like a homework assignment problem, and it would not be appropriate for us to help with that.

- Patrick