# tough physics question

A 500 turn solenoid with a length of 20 cm and a radius of 1.5 cm carries a current of 2.0 A. A second coil of four turns is wrapped tightly about this solenoid so that it can be considered to have the same radius as the solenoid. Find the following when the current in the solenoid increases to 5.0 A in a period of 0.90 s.
(a) the change in the magnetic flux through the coil
T·m2
(b) the magnitude of the average induced emf in the coil
V

1. 👍
2. 👎
3. 👁
1. I need to see your thinking. These are very basic questions about computing magnetic flux from current in a solenoid, and from the changing B calculating the emf generated using faradays law. I need to see what you are missing.

1. 👍
2. 👎
👤
bobpursley

## Similar Questions

1. ### Physics

A 765-kg car is travelling north and makes a gradual turn to the east at a constant speed of 15 m/s. The radius of the turn is 112 m. I calculated the angular velocity to be 0.135 m/s and the friction force needed to be 1410.86 N.

2. ### Physics

A single-turn square loop of side L is centered on the axis of a long solenoid. In addition, the plane of the square loop is perpendicular to the axis of the solenoid. The solenoid has 1490 turns per meter and a diameter of 6.00

3. ### Physics

A 550 turn solenoid is 15 cm long. The current in it is 33 A. A 3.0 cm long straight wire cuts through the center of the solenoid, along a diameter. This wire carries a 22 A current downward( and is connected by other wires that

4. ### Physics

An aluminum ring of radius 5.00 cm and resistance 2.00 10-4 Ω is placed around the top of a long air-core solenoid with 997 turns per meter and a smaller radius of 3.00 cm, as in the figure below. If the current in the solenoid

1. ### PHYSIC

What current is required in the winding of a long solenoid that has 1000 turns uniformly distributed over a length of 0.4 m, to produce at the center of the solenoid a magnetic field of magnitude 1.0 x 10 -4 T?

2. ### Physics

Computer-controlled display screens provide drivers in the Indianapolis 500 with a variety of information about how their cars are performing. For instance, as a car is going through a turn, a speed of 201 mi/h (89.847 m/s) and a

3. ### Physics

A long wire carries a current of 20 A along the directed axis of a long solenoid. The field due to the solenoid is 4 mT. Find the field at a point 3 mm from the solenoid axis.

4. ### Physics

A 5.0 amp current flows through a 0.20m long solenoid with 1500 loops What are the magnitude and direction of the magnetic field at the centre of the solenoid?

1. ### physics

a) Find the inductance of an ideal solenoid with 300 turns, length 0.5m, and a circular cross section of radius 0.02m. b) A solenoid with = 1000, = 1.0 cm and = 50cm is concentric within a second coil of = 2000, = 2.0 cm, and =

2. ### Physics

To construct a solenoid, you wrap insulated wire uniformly around a plastic tube 12 cm in diameter and 45 cm in length. You would like a 2.0-A current to produce a 2.1-kG magnetic field inside your solenoid. What is the total

3. ### PHYSICS

A coil with 150 turns , a radius of 5.0 cm , and a resistance of 12 ohms surrounds a solenoid with 230 turns/cm,and a radius of 4.5 cm. The current in the solenoid changes at a constant rate from 0 to 2 A in 0.10 sec. Calculate

4. ### Physics

A solenoid has N=1760.0 turns, length d=40 cm , and radius b=0.4 cm, (bL/R) after S1 is closed? . unanswered (d) How much energy (in J) is stored in the magnetic field of the coil a very long time (t>>L/R) after S1 is closed?