Podcast
Questions and Answers
What happens to the compass needle when the key is open and the wire is in the S-N direction?
What happens to the compass needle when the key is open and the wire is in the S-N direction?
- The needle does not show any deflection
- The needle points in the SN direction, perpendicular to the wire
- The needle points in the NS direction, parallel to the wire (correct)
- The needle points in the WE direction, perpendicular to the wire
If the current passing from A to B is increased, what happens to the deflection of the compass needle below the wire?
If the current passing from A to B is increased, what happens to the deflection of the compass needle below the wire?
- The deflection remains unchanged
- The deflection increases (correct)
- The needle aligns itself with the wire
- The deflection decreases
What inference can be drawn about producing a magnetic field around a current-carrying wire?
What inference can be drawn about producing a magnetic field around a current-carrying wire?
- The magnitude of current does not affect the strength of the magnetic field produced
- The direction of current does not influence the magnetic field produced
- Current produces a magnetic field around it (correct)
- Only moving charge produces a magnetic field around it
What happens to the deflection of the compass needle when the direction of the current in the wire is reversed?
What happens to the deflection of the compass needle when the direction of the current in the wire is reversed?
What is the pattern of magnetic field lines inside a solenoid?
What is the pattern of magnetic field lines inside a solenoid?
What factor influences both the strength and direction of the magnetic field produced by a single straight wire?
What factor influences both the strength and direction of the magnetic field produced by a single straight wire?
In the vicinity of wires P and Q, what is the shape of the magnetic field lines?
In the vicinity of wires P and Q, what is the shape of the magnetic field lines?
What happens to the pattern of magnetic field lines when the direction of current in a loop is reversed?
What happens to the pattern of magnetic field lines when the direction of current in a loop is reversed?
How does an increase in current affect the arrangement of iron fillings around a wire?
How does an increase in current affect the arrangement of iron fillings around a wire?
What is the significance of the direction of the North pole of a compass in a magnetic field?
What is the significance of the direction of the North pole of a compass in a magnetic field?
