11. For any two series resist a. The current in resistor is the same b. The Powe

Question

11. For any two series resist a. The current in resistor is the same b. The Power dissipated by each resistor is the same e. The potential difference across each resistor is the same d. None of the above is necessarily true 12. A 1.6 v battery, a 5.0 n resistor, and a 20.0 sa resistor are in parallel. The power delivered by t battery is lb. 0.64 w c. 1.4 W d. 22. W The following figure is for Test Questions 13 and 14. Assume: Rr 45-n, R2 25-2 and Rs 100-2. ANWh 13. Find the equivalent resistance in the above circuit (assuming an ideal battery a, 24 S2 b. 65 S2 c. 120 d. 170 S2 14. If the battery voltage is 9.0 V, what is the (approximate) current in Ri? a. 10 mA b. 77 mA, c. 140 mA d. 1.2 A

Explanation / Answer

R2 and R3 are in parallel connection,

their equivalent is R then

1/R = 1/R2 + 1/R3 = 1/25 + 1/100

R = 20 ohm

now R and R1 are in series with battery.

Req = R + R1 = 45+ 20 = 65 ohm

Ans(b)

14. current through battery = through R1 = through R = 9 / 65 = 0.138 A Or 138 mA

Ans(c)

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