You wish to construct a solenoid with a diameter of 2.00 cm that will produce a magnetic field of 7.20 x 10T at its center when a current of 14.0 A is passing through the coils. You want the resistance of the coil wire to be 2.80 0. The resistivity of the wire used is 1.70 x 10n- m (at 20.0°C), and you are using a wire that has a cross sectional area of 3.14 x 10-B m2. (Note that this solenoid may not necessarily be so tightly wound that the adjacent loops of wire will touch each other. Nonetheless, you may assume that it behaver like an ideal solenoid.) Determine the following. (a) number of turns needed on the solenoid turns (b) length of the solenoid m 7 Pointsl DETAILS OSUNIRHYS1 22 2 WA

In an experiment designed to measure the Earth's magnetic field using the Hall effect, a copper bar 0.440 cm thick is positioned along an east-west direction. Assume n = 8.46 x 1028 electrons/m³ and the plane of the bar is rotated to be perpendicular to the direction of B. If a current of 8.00 A in the conductor results in a Hall voltage of 5.80 x 1012 v, what is the magnitude of the Earth's magnetic field at this location? 0.0431 Your response is off by a multiple of ten. µT

The loop in the figure is being pushed into the 0.20 T magnetic field at 45 m/s . The resistance of the loop is 0.50 N. (Figure 1) You may want to review (Pages 849 - 851) . Figure 1 of 1 V В 5.0 cm

The 12.0 cm long rod as shown moves at 4.00 m/s.What is the strength of the magnetic field if a 95.0 V emf isinduced?

A loop of wire moves with a velocity of 3.0 m/sm/s through a magnetic field whose strength decreases with distance at a rate of 5.0 μT/m�T/m. If the loop has an area of 0.75 m2m2 and internal resistance of 0.50 ΩΩ, what is the current in the wire?

At a certain place, Earth's magnetic field has magnitude B =0.806 gauss and is inclined downward at an angle of 71.1° to the horizontal. A flat horizontal circular coil of wire with a radius of 13.1 cm has 939 turns and a total resistance of 73.9 Q. It is connected to a meter with 130 Q resistance. The coil is flipped through a half-revolution about a diameter, so that it is again horizontal. How much charge flows in coulombs through the meter during the flip? Number Units

A circuit is made with a resistor of resistance 25 ohms and a movable bar with length 15 cm moving to the left with speed 8 m/s. The whole circuit is in a magnetic field B = 1.5 T (into page). Use this set up to answer the following questions. What is the current through the resistor in amps? Answer to 3 decimal places.

You wish to construct a solenoid with a diameter of 2.00 cm that will produce a magnetic field of 6.20 × 10¬2 T at its center when a current of 14.0 A is passing through the coils. You want the resistance of the coil wire to be 5.60 . The resistivity of the wire used is 1.70 x 10-8 N:m (at 20.0°C), and you are using a wire that has a cross sectional area of 3.14 × 10¬8 m². (Note that this solenoid may not necessarily be so tightly wound that the adjacent loops of wire will touch each other. Nonetheless, you may assume that it behaves like an ideal solenoid.) Determine the following. (a) number of turns needed on the solenoid turns (b) length of the solenoid

The slide generator in the figure below is in a uniform magnetic field of magnitude 0.0500 T. The bar of length 0.340 m is pulled at a constant speed of 0.500 m/s. The U-shaped conductor and the bar have a resistivity of 2.75 ✕ 10−8 Ω · m and a cross-sectional area of 9.00 ✕ 10−4 m2. Find the current in the generator when  x = 0.680 m.  (Note that the  A  in the image below is the area of the loop, not the cross-sectional area of the conductor and bar.)

Tutorial Exercise In an experiment designed to measure the Earth's magnetic field using the Hall effect, a copper bar 0.415 cm thick is positioned along an east-west direction. Assume n = 8.46 x 1028 electrons/m3 and the plane of the bar is rotated to be perpendicular to the direction of B. If a current of 8.00 A in the conductor results in a Hall voltage of 5.52 x 10-12 v, what is the magnitude of the Earth's magnetic field at this location?