For the circuit shown in the following figure both meters are idealized, the bat

Question

For the circuit shown in the following figure both meters are idealized, the battery has no appreciable internal resistance, and the ammeter reads 1.18 A. (Let R1 = 46.0 ohm, R2 = 21.0 ohm, and R3 = R4 = 11 ohm.)

For the circuit shown in the following figure both meters are idealized, the battery has no appreciable internal resistance, and the ammeter reads 1.18 A. (Let R1 = 46.0 ohm, R2 = 21.0 ohm, and R3 = R4 = 11 ohm.) (a) What does the voltmeter read? ______V (b) What is the emf ? of the battery? ______V

Explanation / Answer

potential drop acros R2 ,R3 = V2 = V3 = 1.18*21 = 24.78

i3 = 24.78/11 = 2.252

i4 = 24.78 /(11+10) = 1.18

i =i in circuit = i2 + i3 + i4 = 1.18 + 2.252 + 1.18 = 4.612

a) V reads = 4.612 *46 = 212.152

b) 24.78 + 212.152 + (35*4.612) = 398.352 V = emf

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