The graph shows the relationship between potential difference V and current / for a fixed 20 Q resistor and a filament lamp. 9V VN A 10 8. resistor 4 20Ω lamp -> 0 0.1 0.2 0.3 0.4 1/A The resistor and lamp are placed in series with a 9 V battery of negligible internal resistance. The current in the circuit is A 0.1 A в 02 А С 0ЗА D 0.4 A 06 During a thunderstorm, a flash of lightning resulted in 600000 C of charge flowing in a lightning conductor in a time of 40 ms. The current in the conductor was A 1.5 x 10 A B 2.4 x 10 A C 1.5 x 10 A D 2.4 x 10' A 2.

The figure below shows a circuit consisting of three ideal batteries and four resistors. The batteries have emfs &₁ = 2.0V and E2 E3 = 4.0 V. The resistances are R₁ = 1.0 and R₂ = 2.0. R₁ R₁ ww 18, R₁ a R₂ Est €18₂ E2 R₁ (a) What is the current (magnitude and direction) in each battery? (b) What is the potential difference V₁ - V₁ between the points a and b indicated in the figure? (c) Check your results by checking the sum of the currents at the node you did not use for your node equations and the voltages in a loop you did not use. (d) Check your results by choosing ground at one point in the circuit as your V=0 reference and finding each unique voltage in the circuit and labeling the circuit with those voltages.

3 9. Four resistors R₁=7.00 2, R₂ =11.0 2, R3-10.0 2, and R4 8.00 2 are mounted as shown in the figure. The voltage of the battery is V = 22 Volts. What is the current in the R₂ resistor? X 0.16 Amps 32,444 20 $ 888 F4 24 % 5 2 6 tv F6 -www- R₁ H MacBook Air & 7 www R₂ e AA F7 * 00 8 DII FB R3 R4 9 F9 F10 (1 F11 F12

A 20 V battery is connected to a resistor. Neglecting the internal resistance of the battery, the power delivered to the resistor is 10 W. The resistance of this resistor is equal to a. 40 0 Ob.3.0 2 OC. 0.02 n d. 0.33 0