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me File Edit View History Bookmarks People Window Help t 37% Sun Feb 12 535 PM Mastering Physics: pp11 Secure https://session.masteringphysics.com/myct/itemView?as Phy 284 Sp17 pp11 Practice Problem 199 1 of 5 next Ch Practice Problem 19.9 combination; the 2.0 A current arriving at point e in the ciroult divides equaly. Half goes through Ra and half through Ra. At point d, these two 1.0 A currents recombine into a2.0 A current. In this example we wil use the concept of equivalent resistance to determine the current in a circuit. Three identical resistors with resistances of 6 are connected as shown in (Figure 1) battery an emfof 18.0 V and zero intermal Part A Practice Problem: Find the equivalent resistance of the resistor network. (b) Find the current in each What is the current through Ri in the network in this example if the resistors aren't equal, but instead R 5.0 n, Ra 6.00 n, and Express your answer in amperes to two significant figures. Figure 1 of 8 Submit My,Answers Give Up Incorrect: Try Again; 2 attempts remaining R, 600 Part B Practice Problem: What is the current through R2 in the network in this example if the resistors aren't equal, but instead R 5.00 n, R 6.0n, and o o o o o o 4,0 m?Explanation / Answer
when, R1 = 5 ; R2 = 6 and R3 = 4
The loop resistance will be:
r = 6*4/(6+4) = 2.4 A
r is in series with R
Req = 2.4 + 5 = 7.4 Ohm
I = 18/7.4 = 2.43 A
Hence, I' = 2.43 A
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