which statements are true about moving the compass around the wire? check all that apply. with no current…

which statements are true about moving the compass around the wire? check all that apply. with no current, the compass needle will not move. if the light bulb is on, the compass needle will move. if the circuit is on, compass needle movement will indicate a dead battery. if current is flowing, the compass needle will not move unless the compass is touching the wire. changing the battery terminals will change the current flow and the compass will point differently.

which statements are true about moving the compass around the wire? check all that apply. with no current, the compass needle will not move. if the light bulb is on, the compass needle will move. if the circuit is on, compass needle movement will indicate a dead battery. if current is flowing, the compass needle will not move unless the compass is touching the wire. changing the battery terminals will change the current flow and the compass will point differently.

Answer

Answer:

  • With no current, the compass needle will not move.
  • If the light bulb is on, the compass needle will move.
  • Changing the battery terminals will change the current flow and the compass will point differently.

Explanation:

Step1: Understand magnetic - field and current relationship

A current - carrying wire produces a magnetic field. Without current, there is no magnetic field from the wire to affect the compass, so the compass needle will not move.

Step2: Light bulb on implies current flow

When the light bulb is on, it means there is current flowing in the circuit. The current - carrying wire creates a magnetic field which can move the compass needle.

Step3: Effect of battery terminal change

Changing the battery terminals changes the direction of the current flow. Since the direction of the magnetic field around the current - carrying wire depends on the current direction, the compass will point differently.

Step4: Analyze incorrect statements

If the circuit is on, the compass needle movement indicates the presence of a magnetic field due to current flow, not a dead battery. Also, if current is flowing, the compass needle will move even if it is not touching the wire because the magnetic field exists around the wire in space.