Question

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

Answer 1

Explanation:

resistance requried = V/I = 220/ 5 = 44 ohm

so four identical 176 ohm resistors connected in parallel gives the equivalent output as 44 ohm

so, 4 176ohm resistors are required

Answer 2

Answer:

voltage= 220V

Current = 5A

Resistance= 44ohm

Resistance of 44ohm is required

we know resistance in parallel

if we have same resistors is

R = R'/n

where n is number of resistor used

Here R'= 176ohm and R is 44 ohm

n= R'/R = 176/44= 4

Number of resistors used = 4

Explanation: