Advertisements
Advertisements
Question
If the strength of the current flowing through a wire is increased, the strength of the magnetic field produced by it ______.
Options
decreases
increases
remains the same
first increases then decreases
Advertisements
Solution
If the strength of the current flowing through a wire is increased, the strength of the magnetic field produced by it increases.
Explanation:
The amount of current passing through the conductor directly correlates with the magnetic field generated.
APPEARS IN
RELATED QUESTIONS
A positively-charged particle (alpha-particle) projected towards west is deflected towards north by a magnetic field. The direction of magnetic field is ______.
State whether the following statement is true or false
The field at the centre of a long circular coil carrying current will be parallel straight lines.
State whether the following statement is true or false:
The magnetic field inside a long circular coil carrying current well be parallel straight lines.
Fill in the following blank with suitable words:
For a current-carrying solenoid, the magnetic field is like that of a ...........
Draw a sketch to show the magnetic lines of force due to a current-carrying straight conductor.
The magnetic field lines in the middle of the current-carrying solenoid are?
(a) circles
(b) spirals
(c) parallel to the axis of the tube
(d) perpendicular to the axis of the tube
The force experienced by a current-carrying conductor placed in a magnetic field is the largest when the angle between the conductor and the magnetic field is:
45°
60°
90°
180°
i) Which principle is explained in this figure?
ii) Which rule is used to find out the direction of a force in this principle?
iii) In which machine this principle is used? Draw a diagram showing working of that machine
State two ways to increase the speed of rotation of a D.C. motor.
A copper conductor is placed over two stretched copper wires whose ends ate connected to a D.C. supply as shown in the diagram.
- What should be the magnetic poles at the points A and B lying on either side of the conductor to experience the force in the upward direction?
- Name the law used to find these polarities.
