How many 176 ohm resistors in parallel are required


Asked by admin @ in Physics viewed by 285 People


How many 176 ohm resistors (in parallel) are required to carry 5A on a 220V line?

Answered by admin @



4 Resistors are required

Step-by-step explanation:


Given:

Volts = 220 Volts

Current = 5 Ampere

Resistance of each resistor, R = 176 Ohms

No of resistors = n

We know that:

v = RpI

∴        v = \frac{R}{n}I                   (\frac{1}{Rp} = n(\frac{1}{R})

Taking N to the other side we get,

n = \frac{RI}{V}

n = \frac{176 * 5}{220}

n = 4

Therefore, 4 Resistors are required.


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