First we calculate the current across each resistor. From Ohm's law, we arrive at a general formula for current: Plugging in values, the current across the resistor R1 is equal to: (Please note that the current is in milliamperes) mA Similarly the current across R2 is: 12 = mA And the current across R3 is: 13 = mA The current read by the ammeter is the sum of the currents across each resistor: 1=1+/2+13 | = mA Alternatively, we can solve for the current across the ammeter by first calculating the equivalent resistance and then applying Ohm's law. The equivalent resistance of the three resistors in parallel is: 1/Reg =1/R1+1/R2 +1/ Thus, Reg Ω

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Chapter1: Units, Trigonometry. And Vectors
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First we calculate the current across each resistor. From Ohm's law, we arrive at a general formula for current:
Plugging in values, the current across the resistor R1 is equal to: (Please note that the current is in milliamperes)
mA
Similarly the current across R2 is:
12 =
mA
And the current across R3 is:
13 =
mA
The current read by the ammeter is the sum of the currents across each resistor:
|=l1+/2 +l3
| =
mA
Alternatively, we can solve for the current across the ammeter by first calculating the equivalent resistance and then applying
Ohm's law.
The equivalent resistance of the three resistors in parallel is:
1/Reg =1/R, +1/R2 + 1/
Thus,
Rea
Ω
%3D
Transcribed Image Text:First we calculate the current across each resistor. From Ohm's law, we arrive at a general formula for current: Plugging in values, the current across the resistor R1 is equal to: (Please note that the current is in milliamperes) mA Similarly the current across R2 is: 12 = mA And the current across R3 is: 13 = mA The current read by the ammeter is the sum of the currents across each resistor: |=l1+/2 +l3 | = mA Alternatively, we can solve for the current across the ammeter by first calculating the equivalent resistance and then applying Ohm's law. The equivalent resistance of the three resistors in parallel is: 1/Reg =1/R, +1/R2 + 1/ Thus, Rea Ω %3D
QUESTION 6
What is the current read by the ammeter in the circuit below? Let R1 = 1 kiloohm, R2 = 2 kiloohm, R3 = 3 kiloohm, and the emf
of the ideal source is 5 volts.
Input R1, R2, and R3 for resistors R1, R2, and R3 respectively. Input E for the emf E. Use context clues to figure out if you need
to input a numerical value, variable, word, etc. All numerical answers should be in three significant figures.
R1
R2
R3
Transcribed Image Text:QUESTION 6 What is the current read by the ammeter in the circuit below? Let R1 = 1 kiloohm, R2 = 2 kiloohm, R3 = 3 kiloohm, and the emf of the ideal source is 5 volts. Input R1, R2, and R3 for resistors R1, R2, and R3 respectively. Input E for the emf E. Use context clues to figure out if you need to input a numerical value, variable, word, etc. All numerical answers should be in three significant figures. R1 R2 R3
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