The electric field of a point charge decreases as 1/r2, with r being the distance from...
The electric field of a point charge decreases as 1/r2, with r being the distance from the charge. The magnetic field of a magnet decreases as 1/r3 far away from the magnet. Why is the dependence on the distance r different in these two cases?
Homework Answers
Electric field due to a single charge falls as 1/r2 with distance r but if we take an electric dipole( two equal and opposite charges) than electric field varies as 1/r3 . Magnet is already a magnetic dipole as magnetic monopole doesn't exist so magnetic field around it varies as 1/r3.
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The electric field of a point charge decreases as 1/r2, with r
being the distance from...
Basic Coulomb's law tells us that the electric field of a point charge q, E=ke q/r2,...
Basic Coulomb's law tells us that the electric field of a point
charge q, E=ke q/r2, scales with distance r
as 1/r2: when the distance increases by a factor of 2,
the magnitude of the field decreases by a factor of 4. We can write
this as E(r) ∝ 1/r2. An interesting and practically
important question is how the electric field of a group of charges
scales with distance (asymptotically) far away from the group. The
figure below depicts 3...
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5. In lecture we saw the electric field of a dipole. In particular, we saw that...
5. In lecture we saw the electric field of a dipole. In particular, we saw that very far from the dipole, the electric field is proportional to 1/r3. Below is an electric quadrapole. Two charges of -q are on opposites sides of and a distance d away from a charge of +2q. Determine the electric field at the point P in terms of r. What is the highest power of r in your expression for the electric field if P...
5. In lecture we saw the electric field of a dipole. In particular, we saw that...
5. In lecture we saw the electric field of a dipole. In particular, we saw that very far from the dipole, the electric field is proportional to 1/r3. Below is an electric quadrapole. Two charges of-q are on opposites sides of and a distance d away from a charge of +2q. Determine the electric field at the point in terms of r. What is the highest power of r in your expression for the electric field if P is taken...
5. In lecture we saw the electric field of a dipole. In particular, we saw that...
5. In lecture we saw the electric field of a dipole. In particular, we saw that very far from the dipole, the electric field is proportional to 1/r3. Below is an electric quadrapole. Two charges of -q are on opposites sides of and a distance d away from a charge of +2g. Determine the electric field at the point P in terms of r. What is the highest power of r in your expression for the electric field if P...
E) zero 5. If R is the distance from a magnetic dipole, then the magnetic field...
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Draw the electric field surrounding a positive and negative point charge. Similarly, draw the magnetic field...
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How do you find the electric field at a point r distance away from a continuous...
How do you find the electric field at a point r distance away from a continuous charge distribution WITHOUT using Gauss's Law?
If R is the distance from a magnetic dipole, then the magnetic field it produces is...
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Basic Coulomb's law tells us that the electric field of a point
charge q, E=ke q/r2, scales with distance r
as 1/r2: when the distance increases by a factor of 2,
the magnitude of the field decreases by a factor of 4. We can write
this as E(r) ∝ 1/r2. An interesting and practically
important question is how the electric field of a group of charges
scales with distance (asymptotically) far away from the group. The
figure below depicts 3...
15. Point P and point charge Q are separated by a distance R. The electric field at point Phas magnitude E. How could the magnitude of the electric field at point P be doubled to 25? O double the distance to 2R O reduce the distance to R2 reduce the distance to R/4 reduce the point charge to Q2 double the point charge to 20 11. What is the electric field strength atx-0 m, y-0 m produced by two electrons,...
5. In lecture we saw the electric field of a dipole. In particular, we saw that very far from the dipole, the electric field is proportional to 1/r3. Below is an electric quadrapole. Two charges of -q are on opposites sides of and a distance d away from a charge of +2q. Determine the electric field at the point P in terms of r. What is the highest power of r in your expression for the electric field if P...
5. In lecture we saw the electric field of a dipole. In particular, we saw that very far from the dipole, the electric field is proportional to 1/r3. Below is an electric quadrapole. Two charges of-q are on opposites sides of and a distance d away from a charge of +2q. Determine the electric field at the point in terms of r. What is the highest power of r in your expression for the electric field if P is taken...
5. In lecture we saw the electric field of a dipole. In particular, we saw that very far from the dipole, the electric field is proportional to 1/r3. Below is an electric quadrapole. Two charges of -q are on opposites sides of and a distance d away from a charge of +2g. Determine the electric field at the point P in terms of r. What is the highest power of r in your expression for the electric field if P...
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...
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