Answer to Question #195571 in Electric Circuits for martin

Question

An 18.0 V battery is connected to a circuit that has an ammeter (A1) a 5.50-ohm resistor connected in series with a voltmeter (V1) and 3 resistors connected in parallel R1, 2.0 ohms, R2, 2.0 ohms, and R3, 1.0 ohms. There is a voltmeter (V2) placed across the R1 and an ammeter (A2) in line with R2.  A. Draw the circuit diagram.  B. calculator the total resistance in the circuit.  C. calculate the values of the meters.

Answer 1

(B)Total resistance, $R=5.50+\bigg(\dfrac{1}{R_1}+\dfrac{1}{R_2}+\dfrac{1}{R_3}\bigg)^{-1}$

$R=5.50+0.5=6\space\Omega$

(C) Current passing through ammeter, $A=\dfrac{18}{6}=3\space A$

Voltage reading in voltmeter, $V=3\times5.50=16.5\space V$

Voltage reading in voltmeter, $V_2=3\times0.5=1.5\space V$

Current reading in ammeter, $A_2=\dfrac{1.5}{2}=0.75\space A$