Advertisements
Advertisements
Question
A constant current flows in a horizontal wire in the plane of the paper from east to west as shown in Figure. The direction of magnetic field at a point will be North to South
Options
directly above the wire
directly below the wire
at a point located in the plane of the paper, on the north side of the wire
at a point located in the plane of the paper, on the south side of the wire
Solution
directly below the wire
Explanation -
If we observe the direction of the magnetic field by applying right-hand thumb rule then, we will find that the direction of the magnetic field is from North to South below the wire.
APPEARS IN
RELATED QUESTIONS
State the rule to determine the direction of a magnetic field produced around a straight conductor-carrying current.
What is the other name of Maxwell's right-hand thumb rule?
State and explain Fleming's right hand rule.
Name and state the rule to find the direction of:
current induced in a coil due to its rotation in a magnetic field.
A straight wire lying in a horizontal plane carries a current from north to south.
- What will be the direction of magnetic field at a point just underneath it?
- Name the law used to arrive at the answer in part (a).
A positive charge is moving towards a person. The direction of magnetic field lines will be in ____________.
A current through a horizontal power line flows from south to north direction. The direction of magnetic field line 0.5m above it is ____________.
A positive charge is moving upwards in a magnetic field directed towards the north. The particle will be deflected towards ____________.
The strength of magnetic field inside a long current carrying straight solenoid is
|
Given below is a circuit to study the magnetic effect of electric current. ABCD is a cardboard kept perpendicular to the conductor XY. A magnetic compass is placed at the point P of the cardboard. P1 and P2 are the positions of the magnetic compass, before and after passing a current through XY respectively.
|
- Name the rule that is used to predict the direction of deflection of the magnetic compass.
- State the direction of current in the conductor (X to Y or Y to X) when the circuit is complete.
- If resistance R is increased, then what will be the effect on the magnetic lines of force around the conductor?
