Problem 6: A solenoid with 1110 windings per meter has a diameter of 7.84 cm. - R - At what rate, in amperes per second, must the magnitude of the current change to create an electric field with a magnitude of 5.24 m V/m at a radial distance of 1.93 cm from the axis of the solenoid? Numeric : A numeric value is expected and not an expression. di = A/s Problem 7: Suppose a motor connected to a 130 V source draws 19 A when it first starts. Randomized Variables V = 130 V 1 = 19 A Part (a) What is its resistance in ? Numeric : A numeric value is expected and not an expression. R = Part (b) What current does it draw at its normal operating speed when it develops a 100 V back emf? Numeric : A numeric value is expected and not an expression. Problem 8: A motor operating on a 260 V source has a 170 V back emf at operating speed and draws a 13 A current. Part (a) What is its resistance in ? Numeric : A numeric value is expected and not an expression. R = Part (b) What current does it draw when it is first started in A? Numeric : A numeric value is expected and not an expression