(a) When placed in a magnetic field, ferrous materials become magnetized, intensifying the magnetic field. Explain what effect would placing a ferrous bar in the primary coils have on the magnetic flux in the secondary coil?
(b) An oscilloscope probe is used to measure the voltage across a resistor. Explain why is this related to the current in the circuit?
(c) What does Vb/Va tell me when the oscilloscope probe A measures the total voltage while probe B measures only voltage across the resistor?
(d) Determine what does a galvanometer measure and in what units does the galvanometer measure it in?