Which of the following will cause an induced current in a coil of wire?
Which of the following will cause an induced current in a coil of wire?
the constant field of the earth passing through the coil | |
a magnet resting near the coil | |
a magnet being moved into or out of the coil | |
a wire carrying a constant current near the coil |
a magnet being moved into or out of the coil will cause an induced current in a coil of wire because it'll result in change in flux
To have induced current, there should be a change in magnetic flux. In the given options, only C can produce a change in magnetic flux concerning the coil.
Options A, B, D have flux, but they are not changing with time. Only a variable magnetic flux induces a current.
Which of the following will cause an induced current in a coil of wire? Which of...
Concept Questions (multiple choice, choose the best answer) __1. A current can be induced to flow in a coil in which of the following situations? a. holding a powerful magnet in the middle of a coil of wire b. moving a coil of wire and a powerful magnet fixed together in the same direction c. spinning a coil of wire near an electromagnet d. holding a coil of wire over a bar magnet
What is the direction of the current induced in the coil? Wire Coil 1) Current in the wire is turned on and flows upward; Coil 2) Current is held constant and flows upward; Coil 3) Current in the wire is turned off, Coil [CW - Clock Wise; CCW - Counter Clock Wise] 1) CCW 2) CW 3) CW ОА. 1) CCW 2) None B. 3) CW 1) CW C. 2) CCW 3) CW 1) CW D. 2) None 3) CCW
If a bar magnet is falling through a loop of wire, the induced current in the loop of wire sets up a field which exerts a force on the magnet. This force between the magnet and the loop will be repulsive when: A. the magnet enters the loop B. the magnet is halfway through C. the magnet is leaving the loop D. never Please provide an explanation!
Name Date Partners 2 HOMEWORK FOR LAB 10 ELECTROMAGNETISM 1. In the diagram on the right, a wire is car rying a current. The magnetic field above the wire is into the paper, and the mag- netic field below the wire is out of the paper, as shown. (An x indicates a field line into the paper and a indicates a field line out of the paper.) What is the direc tion of current flow in the wire? Explain your...
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...
In the following figure, determine the direction of the current in resistor ab: A) As switch S is closed. B) As coil B is moved away from coil A with the switch closed; C) As the resistance of R is increased while the switch remains closed A circular loop of wire with radius R, is in a region of spatially uniform magnet field as shown below. The magnetic field is directed into the plane of the figure. Calculate the direction...
4. If a current is running through a wire, which of the following will be induced around the wire? O A reverse current O A gravitational field O A magnetic field O A sound wave 5. If a proton is moving at a speed of 5 m/s to the right (→) through a uniform magnetic field that points to the left (€), which of the following describes the force the proton feels? The proton feels a force pushing it upward...
Do not worry about lab observations. Please help. HOMEWORK FOR LAB 10 ELECTROMAGNETISM 1. In the diagram on the right, a wire is car- a cureent. The magnetic field above wire is into the paper and the mag netic field below the wire is out of the as shown. (An x indicates a field and a. indicates a field line out of the paper) What is the direc- tion of current flow in the wirne? Explain your answer based on...
If a current is running through a wire, which of the following will be induced around the wire? A. A reverse current B. A gravitational field C. A magnetic field D. A sound wave
A magnet falls through a coil. What is the direction of the induced current in the coil IS