Physics 275 Exam 1 16. You measure a 25.0 v potential difference across a 5.00 o

Question

Physics 275 Exam 1 16. You measure a 25.0 v potential difference across a 5.00 o What is the current flowing through it a. 125 A b. 5.00 A C.4.00 A d. 1.00 A wire carries a steady current of 0.1 A over a period of 20 s. What total charge passes through the wire in this time interval? a. 200 C b. 20 C O 2 C d. 0.005C Three 8.0 resistors are connected in series, what is their equivalent resistance? 18. b. 8.00 d. 0.13 How long will it take a charged 80 F capacitor to lose 20% of its energy when it is allowed to discharge through a 45 resistor? a. 0.92 ms b. 0.64 ms c. 0.19 ms d 0.80 ms 19, If a light bulb has a resistance of 10 how much power does it use running off a 12 Volt battery? a. 12 Watts 20, (D) 14.4 Watts 28 kW d. 120 Watts

Explanation / Answer

here i am writing the answer of que. 16

16)

V=i R

so, i= V/R

i= 20/5

i = 4 amp

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