In the figure, e = 94.8 V, R1 = 7.80 Q, R2 = 27.0 Q, R3 = 30.7 Q, and L = 1.65 H. Immediately after switch S is closed, what are (a) i, and (b) iz? (Let currents in the indicated directions have positive values and currents in the opposite directions have negative values.) A long time later, what are (c) i, and (d) iz? The switch is then reopened. Just then, what are (e) i, and (f) i,? A long time later, what are (g) i, and (h) i2? R1 Rs 3. ll

In the accompanying figure, the rails, connecting end piece, and rod all have a resistance per unit length of 2.0 Ω/cm. The rod moves to the left at v = 3.0 m/s. If B = 0.75 T everywhere in the region, what is the current in the circuit (a) when a = 8.0 cm? (b) when a = 5.0 cm? Specify also the sense of the current flow.

5.50 kN 30.0 µF At t=0.0 s, the switch S is closed with the capacitor initially uncharged. At t=0.165 s, the current is I=3.21 mA. Determine the value of E in volts. Type your answer...

In the figure, & = 134 V, R₁ = 8.500, R₂ = 17.602, R3 = 26.4 02, and L = 2.14 H. Immediately after switch S is closed, what are (a) i₁ and (b) i2? (Let currents in the indicated directions have positive values and currents in the opposite directions have negative values.) A long time later, what are (c) i₁ and (d) i₂? The switch is then reopened. Just then, what are (e) i and (f) i2? A long time later, what are (g) i₁ and (h) i₂? (a) Number (b) Number i (c) Number (d) Number i (e) Number i =8 Units Units Units Units S Units R₁ i₂ {R₂ > > W R₁ > ele

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

The figure below shows a simplified model of a cardiac defibrillator, a device used to resuscitate patients in ventricular fibrillation. S R Rorso + The capacitor C charge through the resistor R (when the switch S is toggled to left) and discharge current through the patient's torso which is of resistance (when the switch S is toggled to right). This phenomenon allows the heart's normal rhythm to be reestablished. (a) If the capacitor is initially uncharged with C = 7.0 µF; ɛ = 1240 V, find the value of R (in ohms) required to charge the capacitor to a voltage of 800 V in 2.1 s. (b) If the capacitor is then discharged across the patient's torso with Rtorso = 1200 Q, calculate the voltage (in V) across the capacitor after 4.0 ms.

The coil shown in the figure has 2 turns, a cross- sectional area of 0.20 m2, and a field (parallel to the axis of the coil) with a magnitude given by B = (4.0 + 3.0t2) T, where t is in s. What is the potential difference, VA - Vc, at t = 3.0 s? B A а. -7.2 V b. +7.2 V С. -12 V d. -4.8 V е. +4.8 V

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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

In the figure, ɛ = 78.1 V, Rị = 14.4 N, R2 2.91 H. Immediately after switch S is closed, what are (a) i and (b) iz? (Let currents in the indicated directions have positive values and currents in the opposite directions have negative values.) A long time later, what = 16.7 N, R3 = 39.3 N, and L = %3D