The magnetic field at a distance of 2 cm from a long straight current-carrying wire is 4 T. What is the magnetic field at a distance of 4 cm from this wire?
A) 6 T B) 2 T C) 4 T D) 10 T E) 8 T
Question 2
The phase angle of an RLC series ac circuit with an inductive reactance of 200 and a capacitive reactance of 100 is 40.0. What is the resistance of the resistor in this circuit?
A) 100 B) 200 C) 156 D) 119 E) 265