In circuit below, light bulbs A, B, and C are identical. What will happen when we close the switch S? ε B S A O Brightness of A and C will not be affected. A gets brighter, C gets dimmer. ○ A gets brighter, C gets brighter. ○ A gets dimmer, C gets dimmer. ○ A gets dimmer, C gets brighter.

Consider the circuit below. The capacitor has a capacitance of 10 mF. The switch is closed and after a long time the capacitor is fully charged, (a) What is the current through each resistor a long time after the switch is closed? (b) What is the voltage across each resistor a long rime after the switch is closed? (c) What is the voltage across the capacitor a long time after the switch is closed? (d) What is the charge on the capacitor a long time after the switch is closed? (e) The switch is then opened. The capacitor discharges through the resistors. How long from the time before the current drops to one fifth of the initial value?

A circuit contains a D-cell battery, a switch, a 20- resistor, and three 20-mF capacitors. The capacitors are connected in parallel, and the parallel connection of capacitors are connected in series with the switch, the resistor and the battery, (a) What is die equivalent capacitance of the circuit? (b) What is the KC time constant? (c) How long before the current decreases to 50% of the initial value once the switch is closed?

A 1,00-?O voltmeter is placed in parallel with a 75.0kresistor in a circuit, (a) Draw a circuit diagram of the connection, (b) What is the resistance of the combination? If the voltage across the combination is kept the same as it was across the 75.0-kresistor alone, what is the percent increase in current? (d) If the current through the combination is kept the same as it was through the 75.0-kresistor alone, what is the percentage decrease in voltage? (e) Are the changes found in parts (c) and (d) significant? Discuss.

Three identical 60.0-W, 120-V lightbulbs are connected across a 120-V power source as shown in Figure P28.72. Assuming the resistance of each lightbulb is constant (even though in reality the resistance might increase markedly with current), find (a) the total power supplied by the power source and (b) the potential difference across each lightbulb.

In the circuit diagram below, the switch S is closed for a long time (which means that the capacitor C is fully charged, and so there will be no current in the capacitor's branch of the circuit). In the figure, Vo = 12 V, R₁ = 22 R₂ = 42 and C = 1 μF. S I R₂ R₁ C a) What is the voltage across R₁ (when C is fully charged) ? b) What is the voltage across C (when C is fully charged)? c) The switch S is now opened. What is the current through R₁ as a function of time, t?

TO 2.The voltage is U=6V. R1= 12 R2 = 22 t I. R3 = 32 ORDE (1)Please CORDEIRO equivalent resistance in the calculate the first LUN TONI2046040 (2)Please calculate the current in the second line I,. R2 line). (R3 line) PADEIRO I. R1 R2 R3

01701&cmid=97298page38 For the following circuit in the figure below. Determine V,-V, (in units of V) for E = 48.5 V. a t of estion 20 20 50 9. Select one: OA. 8.08 OB. -40.42 OC. -9.70 OD. -8.08 OE 9.70 ous page brt sc delete backsoace ent

The current through the resistor of resistance Ra in the circuit below is: R. from left to right. V from right to left. B. V from left to right. R,+R,+R3 V from right to left. R,+R,+R,

R R2 R3 In the above circuit, R1 = R2 = R3 = R. The equivalent resistance of the circuit is 2R/3. O 3R. 3R/2. O R. O R/3.