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orangefruit
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Homework Statement
Consider the circuit at right, consisting of two identical resistors (R1 and R2) and a red LED. The battery is ideal and maintains a constant voltage of +9.0 V (i.e., V1 - V2 = +9.0 V). An ideal voltmeter is connected across the LED and R2.
1. At point a, is the direction of the current to the right, to the left, or equal to zero?
2. Rank, from largest to smallest, the absolute values of the currents at points a, b, c, and d. If any of the currents are zero, state so explicitly.
a) a = b = c = d = 0.
b) a = b = c = d > 0.
c) a = b > c = d = 0.
d) a > b > c = d > 0.
e) a = c = d > b = 0.
f) b = c = d > a = 0.
g) c = d > b > a > 0.
3. Rank, from largest to smallest, the absolute values of the voltages across R1, R2, and the LED. If any of the voltages are zero, state so explicitly.
a) R1 = R2 = LED = 0.
b) R1 = R2 = LED > 0.
c) R1 = R2 > LED > 0.
d) R1 > R2 = LED = 0.
e) R1 > LED > R2 > 0.
f) LED > R1 = R2 = 0.
4. What, if anything, can be said about the absolute value of the reading on the voltmeter?
a) 0.0 V.
b) 9.0 V .
c) The absolute value of the voltmeter reading will be greater than 0.0 V and less than 9.0 V.
Homework Equations
V=IR. Loop Rules.
The Attempt at a Solution
For 1, I believe it is to the right due to battery placement.
2, e because no current will want to flow through the voltmeter.
3, d because the positioning of the LED is not allowing current flow.
4, 9, because it is parallel to the battery which is parallel to the components consisting of LED and resistor.
Any help will be appreciated. I hope that getting help will clear any misconceptions I have. Thank you!