wissy asked in Science & MathematicsPhysics · 1 month ago

# what becomes of the voltage if we use 2 resistors of 4w in parallel?

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• D g
Lv 7
1 month ago

The 4 Watts is the rating not the wattage going through it

The voltage across the parallel circuit is the same as the source across it both resistors get the same voltage

• oubaas
Lv 7
1 month ago

V = √P/r

you need to know r , otherwise u cant say the value of V

• 1 month ago

For the formula of power P=(V^2)/R, the power is 4 Watt each. The voltage can be found if you know the resistance.

• 1 month ago

Too lazy to even post the full question when cheating with Yahoo Answers. What becomes of you? FAIL.

• garry
Lv 5
1 month ago

what a dumb question , its the ohm that matter , not if there 4 watts ..

• Zirp
Lv 7
1 month ago

it will be the same as when you use a 2 ohm resistor

• 1 month ago

If you use 2 resistors in parallel the voltage across them is the same.

If they are the same resistance then the currents are equal and they dissipate the same power. If the resistances are different then the currents and power dissipation's will be different but the voltage's will still  be the same.

• 1 month ago

you are missing part of the question, this makes no sense.

wattage RATING becomes 8 watts, but actual watts dissipated depends on applied voltage.

Voltage is whatever you apply.

• 1 month ago

Assume you mean 2 resistors of 4Ω in parallel. 4*4/(4+4) = 1/(1/4+1/4) = 2Ω

Just like 3 9Ω's in parallel = 1/(1/9 + 1/9 + 1/9) = 1/(3/9) = 9/3 = 3Ω

• Mark
Lv 7
1 month ago

Use Ohm's Law for the answer.