A 1.80 cm x 1.80 cm square loop of wire with resistance 1.10×10-2 2 has one edge parallel to a long straight wire. The near edge of the loop is 1.20 cm from the wire. The current in the wire is increasing at the rate of 100 A/s.
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- The switch in figure has been open for a long time. It is closed at t = 0 s. What is the current through the R₁ resistor? (a) Immediately after the switch is closed? (b) After the switch has been closed a long time? (c) Immediately after the switch is reopened? R₁ = 20.0 N; R₂ = 30.0 ; L = 12 mH; E = 40 V W R₂ www ww R₁ elleA man foolishly tries to fish a burning piece of bread from a toaster with a metal butter knife and comes into contact with 120-V ac. He does not even feel it since, luckily, he is wearing rubber-soled shoes. What is the minimum resistance of the path the current follows through the person?3.1 A wire of diameter d, length l and resistivity ρ forms a circular loop. A current entersand leaves the loop at points P and Q as shown in the Figure. Show that the resistance R ofthe wire is given by the expression (4) R = 4ρx(l − x) / π*d^2*l
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