Reference the circuit shown below. (Assume V 1=200V and V 2=180V) Part A Calcula

Question

Reference the circuit shown below. (Assume V1=200V and V2=180V)

Part A

Calculate the resistance of R.

Express your answer in ohms to three significant figures.

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Part B

Calculate the current through the 40 resistor. (Assume that the batteries have no internal resistance.)

Express your answer in amperes to three significant figures.

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Part C

Calculate the power supplied by the 180 V battery. (Assume that the batteries have no internal resistance.)

Express your answer in watts to three significant figures.

Reference the circuit shown below. (Assume V1=200V and V2=180V)

Part A

Calculate the resistance of R.

Express your answer in ohms to three significant figures.

R =     

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Part B

Calculate the current through the 40 resistor. (Assume that the batteries have no internal resistance.)

Express your answer in amperes to three significant figures.

I =   A  

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Part C

Calculate the power supplied by the 180 V battery. (Assume that the batteries have no internal resistance.)

Express your answer in watts to three significant figures.

P =   W  

Explanation / Answer

part A)

let the resistance is R

Using V1 = i * R

200 = 10 * R

R = 20 Ohm

the resistance R is 20 Ohm

part B)

let the current in 40 Ohm is I1

Using Ohm's law

180 = I1 40

I1 = 4.5 A

the current in 40 Ohm is 4.5 A

part C)

current in 20 Ohm

I2 = 180/20 = 9 A

total current through V2 = 9 A + 4.5 A

total current through V2 = 13.5 A

power supplied by 180 V = 13.5 * 180 W

power supplied by 180 V = 4230 W

the power supplied by 180 V is 4230 W

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