A student builds the following circuit in a lab experiment, which she records an

Question

A student builds the following circuit in a lab experiment, which she records and takes home to analyze.   

She uses a voltmeter, that measures in volts, and an ammeter that measures in amps.   
Both were correctly placed in her circuit.   In her notes she wrote
x = 0.15     z = 0.3    but did not indicate volts or amps, or which meter was which.
The resistor on the left is 5 ohms.   

(A)    Which was the ammeter? explain.
(B)    What is the voltage difference across each   resistor?   Explain.
(C)    What is the voltage of the battery? Explain.

Explanation / Answer

(A)

x is the ammeter

ammeter should always be connected inn series to measure the current

(b)

across left resistor Vl = I*RL = 0.15*5 = 0.75 v

x is the current in left reisitor

from ohms law vl = i*Rl

--

across right resistor Vr = Z = 0.3 v

z is the voltmeter connected across Right resistor

voltmeter is connected parllel to risistor

(C)

voltage of the battery V = vl + vr = 1.05 V

left and right resistors are in series

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