Earth's magnetic field
A) results from a huge bar magnet within the planet
B) is believed to arise from current within the planet's core
C) is always parallel to the planet's surface.
D) is always in the same direction
Earth's magnitic field is arise because of metal present in the earth core in molten state and as the earth rotate this molten metal also rotate along with it which results in the movement of free charge particle.
As a result minor current will produce which produce its own magnetic field.
So option B is correct
Earth's magnetic field A) results from a huge bar magnet within the planet B) is believed...
The earth's magnetic field
appears as if it were produced by a strong permanent magnet
embedded in its core. In the figures below, the earth is shown with
the northern hemisphere on top, its core magnet is illustrated by
the overlayed bar magnet, and a compass is illustrated as a diamond
with a black tip at its magnetic north end. Which figure has the
core magnet and compass magnet in roughly the proper
orientation?
A coil is suspended around an axis which is colinear with the axis of a bar magnet.The coil is connected to a resistor with ends labeled “a” and “b”. The bar magnet moves from left to right with North and South poles labeled as in the figure. UseLenz’s law to answer the following question concerning the direction of induced currents and magnetic fields.What is the direction of the induced magnetic field in the coil when the bar magnet ismoving from...
III. Mapping the Field Around a Bar Magnet: An Observation Experiment Purposes: Design an experiment to take appropriate data to find a relationship. Construct a mathematical model to describe that relationship Description: Your task is to use a compass to map the magnetic field of a small magnet. Construct a circle of radius 10 cm on a clean sheet of paper, and mark points on the circle every 30°. Place the bar magnet so that its center is resting at...
The on-axis magnetic field strength 15cm from a small bar magnet is 4.8 μT a)What is the bar magnet's magnetic dipole moment? b)What is the on-axis field strength 19cm from the magnet?
(a) Is the Earth's magnetic field parallel to the ground at all locations? If not, where is it approximately parallel to the surface? (b) Is the strength of the Earth's magnetic field the same at all locations? If not, where is it greatest? (c) Imagine you are a 15th century explorer, sailing across the ocean, guided by a magnetic compass. Will it be easier to navigate near the equator or near one of the Earth's poles? Explain your reasoning. 4....
3. At a certain place on the planet, Earth's magnetic field is directed 35.5° below the horizontal. At that location, a 1.00 m wire carrying a current of 38 A feels a magnetic force of 560 uT. (a) Find the strength of Earth's magnetic field at this location. (b) Find the strength of Bnorizontal at this location.
answer all Q pls
8. A bar magnet is dropped through a loop of copper wire as shown. Recall that ou magnet, magnetic field lines point away from a north pole and toward a south p positive direction of the induced current I in the loop is as shown by the arrows on the loop, the variation of I with time as the bar magnet falls through th by which of the following graphs (the time when the midpoint of...
E) zero 5. If R is the distance from a magnetic dipole, then the magnetic field it produces is proportional A) R B) R2 C) R3 D) R2 E) R3 6. Lines of the magnetic field produced by a long straight wire carrying a current are: A) in the direction of the current B) opposite to the direction of the current C) are circles concentric with the wire D) leave the wire radially E) are lines similar to those produced...
Two charges A and B enter a magnetic field such that the direction of both charges is perpendicular to that field. Both charges experience magnetic (centripetal) force and adopt a curved path. 1. Suppose that the charge A has more mass than charge B and everything else is same for both charges. What will be the difference between the paths of both charges? 2- Suppose that the charge A is moving with a higher velocity than charge B and everything...
1) Which of Maxwell's equations below predicts an induced magnetic field due to changes in an electric field? A) #Edi = 9 B) B. dA= 0 D$B.ds = Hole + Hope E) All of them 2) In the figure, two parallel wires carry currents of magnitude / as shown. The current is decreasing with time. A rectangular loon is midway between the wires. What is the direction of the net magnetic field in the region between the wires and that...