Question

Find the following from the circuit shown below i) current in 15Ω resistor ii) Voltage
across 18Ω resistor and iii) Power dissipated in 7Ω resistor

Answer 1

Answer:

please give figure of question

Answer 2

Answer:

power dissipated in 7 ohs resitor that equal to 76.2 ohms

Explanation:

Current is a flow of electrical charge carriers, usually electrons or electron-deficient atoms. The common symbol for current is the uppercase letter I. The standard unit is the ampere, symbolized by A.

Rs1=2+7 =9 ohms

Rp1=9x18/9+18= 6ohms

Rs2=4ohms +6 ohms=10ohms

Rp2= Rs1 x Rs2 / Rs1+Rs2

      = 90/19 ohms

R=19.7ohms

I=v/r

=125/19.7 = 6.34 ohms

I2=6.34x10/19 = 3.3ohms.

power across 7 ohms =p=I2² (7)

                                        =3.3² x7

.                                        =76.2 ohms

power dissipated in 7 ohs resitor that equal to 76.2 ohms

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