Physics, 10.03.2020 22:16 bhopainting

Three resistors having resistances of R1 = 1.84 Ω , R2 = 2.28 Ω and R3 = 4.75 Ω respectively, are connected in series to a 28.5 V battery that has negligible internal resistance.
Part A) Find the equivalent resistance of the combination. Part B) Find the current in each resistor. Answer in the order indicated. Separate your answers using commas. IR1,IR2,IR3 =Part C) Find the total current through the battery. Part D) Find the voltage across each resistor.

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Answer from: raekwon12

a. 0.8385 Ω

$I_{1.84}15.50A\\\\I_{2.28}=12.5A\\\\I_{4.75}=6.0A$

c.34.0A

d.28.5V

Explanation:

a. The 3 resistors are connected in parallel. To get the equivalent resistance R_e_q , we calculate the combinations in parallel,

-Their combinations is:

$\frac{1}{R_e_q}=\frac{1}{R_{1.84}}+\frac{1}{R_{2.28}}+\frac{1}{R_{4.75}}\\\\\frac{1}{R_e_q}=\frac{1}{1.84\Omega }+\frac{1}{2.28\Omega }+\frac{1}{4.75\Omega }\\\\\frac{1}{R_e_q}=\frac{1}{1.192601}\\\\R_e_q=0.8385\Omega$

#Hence the equivalent resistance of the combination is 0.8385 Ω

b. The 3 resistors are connected in parallel. This means the current is not the same for the 3 resistors. We can use Ohm's law to get current for each resistor, where the voltage for the three is 28.5 V:

$I_{1.84}=\frac{28.5}{1.84\Omega}=15.50A\\\\I_{2.28}=\frac{28.5}{2.28\Omega}=12.5A\\\\I_{4.75}=\frac{28.5}{4.75\Omega}=6.0A$

Hence the current for the three resistors is 15.50A(1.84Ω), 12.5A(2.28Ω), 6.0A(4.75Ω)

c. The total current through resistors connected in parallel is the sum of the individual current flowing through each resistor:

I=15.50A+12.50A+6.0A=34A

#Hence,the total current through the battery is 34.0A

d. Since the three resistors are connected in parallel with the battery, the potential difference across them is same for every resistor and equals the potential difference across the combination:

$\epsilon=V_{1.84}=V_{2.28}=V_{4.75}=28.5V$

#Hence the voltage across each resistor. is 28.5V

Answer from: Quest

i sometimes feel that way too. i feel that i should hurt someone because they hurt me, but i wouldnt do it. that would make things so much worse i have so much experience with this stuff

explanation:

Answer from: Quest

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

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Three resistors having resistances of R1 = 1.84 Ω , R2 = 2.28 Ω and R3 = 4.75 Ω respectively, are co...

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