P 3.4-2 Consider the circuits shown in Figure P 3.4-2.

Figure P 3.4-2.

(a) Determine the value of the resistance R in Figure P 3.4-2b that makes the circuit in Figure P 3.4-2b equivalent to the circuit in Figure P 3.4-2a.

(b) Determine the voltage v in Figure P 3.4-2b. Because the circuits are equivalent, the voltage v in Figure P 3.4-2a is equal to the voltage v in Figure P 3.4-2b.

(c) Determine the power supplied by the current source.

 

The three resistors are in parallel, so

 

 

There fore

 

The voltage is the result of the current passing through R so

 

 

This is also the voltage across the current supply as it is in parallel with R, so

 

 

 

 

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This page last updated on January 18, 2019