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 ; R₂ = 30.0 2; L = 12 mH; ε = 40 V R₂ W Hill elle

In the circuit of the figure & = 3.20 kV, C = 7.80 µF, R1 = R2 = R3 = 1.03 MQ. With C completely uncharged, switch S is suddenly closed (at t = 0). At t = 0, what are (a) current i, in resistor 1, (b) current iz in resistor 2, and (c) current iz in resistor 3? At t = 0 (that is, after many time constants), what are (d)i1. (e)i2, and (f)ig? What is the potential difference V2 across resistor 2 at (g)t 0 and (h)t = o? S R R, (a) Number i Units (b) Number Units (c) Number i Units (d) Number i Units (e) Number i Units (f) Number i Units (g) Number i Units (h) Number i Units

Ɛz= 18 V 非 b 0.5 Q R 2.5 Q R, a 6.0 2 R 1.5 2 h 0.5 N E, = 45 V %3D What is the equation which results when applying the loop rule to loop aedcba, in terms of the variables given in the figure? 0 = If the current through the middle part of the loop is I = 4.75 amps, what is the current through the top loop, I2, in amps? I =

a)What is the current through R1 immediately after the switch S is closed? b) What is the current through R2 after the switch S has been closed for a very long time? Assume that the battery does not go dead.

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 ?

A capacitor in a telephone circuit has a capacitance of 3μF. What current flows through it when 15V at 800Hz is impressed across it? answer should be in polar form

At t 0 the switch S is closed with the capacitor uncharged. If C = 30 mF, & = 30 V, and R = 7.9 kO, what is the potential difference across the capacitor when 2.0 mA? O a 6.30 V O b. 10.25 V Oc 18.15 V Od. 14.20 V O e. 22.10 V

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PART (1) Assume capacitor is fully charged when switch is at position 'a' for about 10 minutes. The switch is changed to position 'b' at t= 0. What is the current in the circuit immediately after the switch is closed? Assume after some time, the current in the circuit is 80.0 mA when the switch is at position 'b'. Can you find, what will be that time? 9.0 V 부 Paragraph a itur b 1.0 με PART (II) Assume a magnetic field of 5.2 T present inside the cyclotron. An electron enters the cyclotron with speed of 2.0 x 107 m/s. What is the radius of the electron's orbit just before they exit from the cyclotron. BI U A/ 10 Ω E✓ E GO + v

For the circuit shown below, € = 15.5V, R₁ = 34.9 Ohms, R₂ = 23.20hms, and L = 70.6 H. The switch S is closed at t = Os. What is the current through R₂ once steady state has been reached? E S т R₂ www R₁ eeee L