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14 Oct 2018
3. If an electrical circuit consists of two resistors R, and R2 connected in parallel, then the total resistance R of the circuit is given by All resistances are measured in ohms (S2). Assume R2 has a constant resistance equal to 512, but Ri is a variable resistor. (a) Find dk. What are the units of this quantity? (4 marks) (b) Suppose the current resistance of R1 is 1l and it is is increasing at a rate of 0.2 2/sec. How fast is the total resistance of the circuit increasing? State your answer with appropriate units. (6 marks)
3. If an electrical circuit consists of two resistors R, and R2 connected in parallel, then the total resistance R of the circuit is given by All resistances are measured in ohms (S2). Assume R2 has a constant resistance equal to 512, but Ri is a variable resistor. (a) Find dk. What are the units of this quantity? (4 marks) (b) Suppose the current resistance of R1 is 1l and it is is increasing at a rate of 0.2 2/sec. How fast is the total resistance of the circuit increasing? State your answer with appropriate units. (6 marks)
evangelistaLv10
24 Jun 2022
Hubert KochLv2
17 Oct 2018
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are connected in parallel, as in the figure, then the total resistance R, measured in ohms (
), given by
and 
are increasing at rates of 
, respectively, how fast is R changing when 
and 
?
