Physics208_GH1_Spring2023_Lab5_NicoleCaringal

1. A ring of cross-sectional area 7 x 10-3 m2 has a length 0.4m is made of steel with relative permeability of 3500. The ring also has an air gap of 0.01m (so total average circumference = 0.41m). It is wound with a coil of 100 turns connected to a 3A supply. a) Calculate the mmf b) Calculate the reluctance for the steel ring c)Calculate the reluctance for the air gap d) Calculate the flux in the circuit e) Calculate the flux density in the air gap. f) If a wire is placed in the gap perpendicular to the magnetic field and a current of 2.5 A is applied, what is the force exerted on the wire?

1. A small chrome plating tank needs a 1000 ampere source. Design an ammeter shunt for a 50 µA D'Arsonal meter movement that has a coil resistance of 2500 ohms. What is the resistance of the shunt in parallel with the meter? O a. 50 micro ohms O b. 10 micro ohms O c. 100 micro ohms O d. 125 micro ohms O e. 250 micro ohms

i need #4, thanks

12)This multiple choice question from MEASUREMENTS INSTRUMENTATIONS course.

Parts a & b pls.

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Two practical batteries are connected in series, such that the positive terminal of one battery is connected to the positive terminal of the other battery. Which of the following must be true? OA. The total EMF is greater than the individual EMFS of the battery O B. When the series combination of batteries is connected to a load, the current will be uneven throughout the circuit. O C. The total internal resistance is equal to the sum of the individual internal resistances O D. When the series combination of batteries is connected to a load, both batteries will be discharging.

Only question one please

A thermistor has a resistance of 16.33k ohms at 0.0 degrees C, and it drops to 6.247k ohms at 20.0 degrees C. This thermistor is used in a simple voltage divider circuit. Vs = supply voltage = 5.0 Vdc, Rs = supply resistance = 10k ohms.

Consider the combination circuit in the diagram below. Use the diagram to answer the following questions. (Assume that the voltage drops in the wires themselves in negligibly small.) G 12VE L a. The electric potential difference (voltage drop) between points B and C is (greater than, equal to, less than) the electric potential difference (voltage drop) between points J and K. b. The electric potential difference (voltage drop) between points B and K is (greater than, equal to, less than) the electric potential difference (voltage drop) between points D and I. c. The electric potential difference (voltage drop) between points E and F is potential difference (voltage drop) between points Gand H. (greater than, equal to, less than) the electric ---- d. The electric potential difference (voltage drop) between points E and Fis, (greater than, equal to, less than) the electric potential difference (voltage drop) between points D and I. e. The electric potential difference (voltage drop)…