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A small, 1.80-mm-diameter circular loop with R=1.00×10−2ΩR=1.00×10−2Ω is at the center of a large 120-mm-diameter circular loop. Both loops lie in the same plane. The current in the outer loop changes from +1.0A to -1.0A in 0.100 what is resistance ?
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- Electric Eels. Electric eels generate electric pulses along their skin that can be used to stun an enemy when they come into contact with it. Tests have shown that these pulses can be up to 500 V and produce currents of 80 mA (or even larger). A typical pulse lasts for 10 ms. What power and how much energy are delivered to the unfortunate enemy with a single pulse, assuming a steady current?A conducting rod with a circular cross-section (this rod is a cylinder) has a radius of 1o mm and is 2 metres long. The rod is made of aluminum, so its conductivity is 3.6 x 10' s/m. A potential difference (voltage) is applied at both ends of this rod and the current is I= 90 A. That's a lot of current! a. What is the resistance of the rod, when measured from one end to the other? b. Calculate the current density in the rod along its length. . Determine the electric field amplitude at all locations within the rod. d. What is the electric potential difference between the two ends of the rod.nd the currents (in A) flowing in the circuit in the figure. (Indicate the direction with the sign of your answer. Due to the nature of this problem, do not use rounded intermediate values in your alculations-Including answers submitted in WebAssign.) ₁24.0 V b R₂ 74 0 0.1002 R₁ 5.00 48.0V 0.500 T-60V Im 10.000 h R₂ www 480 R₂ 22.0 20.200 E₁-36.0V HB1
- The speed of an object is increasing. This means O a. The acceleration of the object is zero O b. The velocity and acceleration of the object are in the same direction Oc. The velocity and acceleration of the object are in opposite directions O d. The velocity and acceleration of the object are perpendicular Three wires of lengths 3m, 4m and 5m are made up of the same material and have the same area of cross section, which wire has the lowest resistance? O a. 4m long wire O b. 3m long wire c. All three wires have the same resistance O d. 5m long wireBiomedical Application. The parts of the body that are most sensitive to electric currents are the brain, the chest muscles and the nerve centers that controls respiration and the heart. A current of 1mA passing through the body will barely be noticeable, but a current of 80mA will usually be fatal unless it is immediately stopped. In most situations, the amount of current that will flow into the body will depend on the condition of the skin at contact locations. Dry skin will have a high resistance but damp or wet skin will have low resistance. Why?1. A large spool in an electrician's workshop has 75 m of insulation coated wire coiled around it. When the electrician connects a battery to the ends of the spooled wire, the resulting current is 1.1 A. Some weeks later, after cutting off various lengths of wire for use in repairs, the electrician finds that the spooled wire carries a 2.9-A current when the same battery is connected to it. What is the length of wire remaining on the spool? m