A coil lies flat on a tabletop in a region where the magnetic field vector points straight
Question:
A coil lies flat on a tabletop in a region where the magnetic field vector points straight up. The magnetic field vanishes suddenly.
When viewed from above, what is the sense of the induced current in this coil as the field fades? There is no induced current in this coil. The induced current flows counterclockwise. The current flows clockwise initially, and then it flows counterclockwise before stopping.
• The induced current flows clockwise.
A resistor and an inductor are connected in series to an ideal battery of constant terminal voltage
Which of the following statements is/are true at the moment contact is made with the battery? (choose all that apply)
the current through the resistor is zero,
the voltage across the resistor is equal to the battery's terminal voltage,
the current drawn from the battery is at a maximum
the voltage across the inductor is equal to the battery's terminal voltage.
the voltage across the resistor is less than the battery's terminal voltage, but not zero.
Expert Answer:
Q1 The induced current flows clockwise According to the Lenz law induced electric current flows in a ... View the full answer
