When two cells of e.m.fs. E1 and E2 are connected in series so as to assist each other the balancing length is found to be 2.7 m. When the cells are connected in series so as to oppose each other, balancing length is foùnd to he 0.3 m. Compare the em.fs. of two cęlls.
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- R C 3. From the figure above, a switch is closed at time t = 0, allowing the capacitor to begin charging. The capacitance of the capacitor is given a value of C = 10 µF with a resistor of resistance R= 10N. At what time is the potential across the capacitor equal to the potential across the resistor?In the figure the ideal batteries have emfs E₁ = 4.89 V and E₂ = 10.2 V, the resistances are each 2.410, and the potential is defined to be zero at the grounded point of the circuit. What are potentials (a)V₁ and (b)V₂ at the indicated points? www R₂ R₁ R3 ww V₁ &₂ R₁Calculate voltage and currents for each resistor in the system Battery/iOLab device - 3V Resistor #1 - 20 kΩ Resistor #2 - 10 kΩ Resistor #3 - 4.7 kΩ
- For the circuit shown in the Figure, a 5.0A current is measured coming from the 60.0V EMF E. Find R and the current through the 3R resistor. Hint: find the equivalent resistance. R 2R m 3R www R ww R 15.0A 5.0 A 60 VIf 480 C pass through a 4.0- 2 resistor in 10 min, what is the potential difference across the resistor? A) 3.6 V 2.4 V 3.2 V 5.0 V E 2.8 V BA capacitor, initially at 21 V, is discharged using an 19 Ω resistor. After 155 s there are 4.2 V across the capacitor. What is the capacitance of the capacitor? (in F) a. 36.6 F b. 13.1 F c. 8.16 F d. 5.07 F
- R R C : R R S R In the circuit above, the battery has emf E, the capacitor has capacitance C, and all of the resistors have the same resistance R. A "long time" after the switch S is closed, what is the voltage Vc across the capacitor?An appliance is connected to a 120 V line. The appliance has a At The "low" sething, the appliance daws 5 A. The "high" "low" and high" high power seting "high" sething is double the low sething. Find he following values: at Lower Sething Higher Setting at Resis tance 2. Power Output 2.Three resistors, a battery and a capacitor are connected as shown below. Initially the switch 'S' is open for a long time, then at time t = 0 the switch is closed. Assuming R₁ = 4 N, R₂ = 6 N, R3 = 9 N, C = 23 µF, and V = 12 V, answer the following questions about the charging process in the circuit. R₂ ww V VI R₁ mm What is the maximum charge on the capacitor (at t→→ ∞)? The maximum charge, Qmax The time constant, t = = What is the time constant of this RC circuit? R₂ Units Select an answer ✓ Units Select an answer ✓ What is the charge on the capacitor at t = 202 μs? The charge, Q = Units Select an answer ✓ C
- H 3a 6v R tami V ܝܐ 412 www. 5a 8 www 12V FIND: V, I, & Rhelp0. An electric power station is producing 1.40 x 10 W of power that is to be sen o* town located 60.0 km away. Each of the two wires that comprise the trannion e resistance per kilometer of length of 400 x 10 Olpe/km. Find the power lont in beatin the wires if the voltage is stepped up from 2200 V to 20000 V using an ideal tranlorr. a) 1.21 x 10 Watts b) 2.32 x 10 Watts c) 1.12 x 10 Watts d) 5.59 x 10 Watts e) 1.16 x 10 Watts nhilo L4.00 yu which have their tratis