Which of the following changes would increase the magnetic field strength at the center of the solenoid, assuming everything else remains constant? Explain why? A.Decreasing the length of the solenoid by removing turns of wire while keeping ? constant B.Decreasing ?,the current in the wire C.Decreasing ?,the number of turns of wire per millimetre D.Increasing ?,the current in the wire E.Increasing the length of the solenoid by adding turns of wire while keeping ? constant

Which of the following changes would increase the magnetic field strength at the center of the solenoid, assuming everything else remains constant? Explain why? A.Decreasing the length of the solenoid by removing turns of wire while keeping ? constant B.Decreasing ?,the current in the wire C.Decreasing ?,the number of turns of wire per millimetre D.Increasing ?,the current in the wire E.Increasing the length of the solenoid by adding turns of wire while keeping ? constant

Similar questions

A solenoid is wound on a rod 4 cm in diameter in 50 cm long. The windings carry a current of 3.5 A in the sense that is shown. The current produces a magnetic field of magnitude 4.1 mT at the center of the solenoid. The number of turns in the solenoid is closest to which? A. 4700 B. 3700 C. 470 D. 1900 E. 19
The diagram below shows two concentric, conducting, circular loops with currents traveling in opposite directions. If the current in the outer loop is I2 = 90.0 μA, what must be the magnitude of the current in the inner loop so that the total magnetic field at the center, C, of both loops is zero? a. 60.0 μA b. 45.0 μA c. 90.0 μA d. 75.0 μA e. 105 μA
a.) a current in the CW direction to enhance the decreasing north magnetic field. b.) a current in the CW direction to enhance the decreasing south magnetic field. c.) a current in the CW direction to oppose the increasing south magnetic field. d.) a current in the CW direction to oppose the increasing north magnetic field. e.) no current in the coil. 7.) A conducting coil is rotated at constant speed in a uniform magnetic field as shown in the figure here. The time required by the loop to make a full rotation is T. The current generated in the coil would increase Side view a.) if the angular speed of the coil increases. b.) if the area of the coil increases. c.) if the strength of the magnetic field increases. d.) All of the above are correct. e.) None of the above are correct. 8.) An RLC circuit has a resonant frequency of fo. When the circuit is driven by an AC voltag source whose frequency is 2fo, which of the following is the most accurate?
1. A DC power line for a light-rail system carries 950 A at an angle of 33° to the Earth’s 5.00 × 10-5 T magnetic field. What is the magnitude of the force (in N) on a 125 m section of this line? 2. Consider a 150 turn square loop of wire 15.5 cm on a side that carries a 56 A current in a 1.6 T field. What is the maximum torque on the loop of wire in N⋅m? What is the magnitude of the torque in N⋅m when the angle between the field and the normal to the plane of the loop θ is 14°? 3. Consider two two long, straight, parallel, current-carrying wires, separated by a distance d = 4.5 cm, as shown in the figure. The left wire is directed out of the page with current I1, and the right wire is directed into the page with current I2. The point P is a distance d from both wires, so the wires and the point form an equilateral triangle. If both wires are carrying a current of 3.5 A, what is the magnitude of the magnetic field, in teslas, at point P? If the current from the left wire is 3.5 A…
The magnetic poles of the coil and the direction of the current shown in the diagram below are: a. The top part of the coil becomes the North magentic pole and the current will flow in the counter clockwise direction looking down at the top of the coil. b. The top part of the coil becomes the North magentic pole and the current will flow in the clockwise direction looking down at the top of the coil c. The top part of the coil becomes the South magentic pole and the current will flow in the counter clockwise direction looking down at the top of the coil d. The top part of the coil becomes the South hmagentic pole and the current will flow in the clockwise direction looking down at the top of the coil
A cylindrical solenoid that is 40-cm long generates a uniform magnetic field of strength 1.4 T inside the solenoid when the current is 7.0 A. How many turns of a single coil are present in this solenoid? a. 40,000 turns b. 64,000 turns c. 56,000 turns d. 48,000 turns e. 32,000 turns
A negatively charged particle is moving with a constant velocity directed to the left through a region of a uniform magnetic field B directed into the page as shown in the figure, in which direction must an electric field be applied to keep the particle moving along a straight line? XB Select one: a.Upward b.Downward c.into the page d.To the leftin the plane of the page e.Out of the page 1.To the right in the plane of the page
7. A very long thin wire produces a magnetic field of 0.002 x 10-4 T at a distance of 1.0 mm from the wire. What is the magnitude of the current? = 4 x 10-7 T.m/A) (Mo a) 1.0 mA b) 2.0 mA c) 4000 mA d) 3100 mA 8. An ideal solenoid having 200 turns and carrying a current of 2.0 A is 25 cm long. What is the magnitude of the magnetic field at the center of the solenoid? (но = 4 x 10-7 T.m/A)
When the given bar magnet is placed along the NS line by identifying its poles, the field of bar magnet and the field are earth are aligned parallel and opposite by. Select one: O a. by rotating the drawing board O b. by rotating the bar magnet O c. rotating the compass needle O d. by rotating the earth field