Em um circuito passa uma corrente de 20a pela resistência de 10 ohms qual a corrente que passa numa resistência de 4 ohms

I = current passed in 10 ohm resistor in the circuit = 20 A

R = resistance of the resistor = 10 ohm

E = emf of the battery supplying current in the battery = potential difference across the resistor.

Using ohm's law

E = I R

inserting the values

E = 20 x 10

E = 200 Volts

r = resistance of resistor of value 4 ohm ,  = 4 ohm

i = current passing through resistance "r"

Using ohm's law , current in the resistor is given as

i = E/r

i = 200/4

i = 50 A

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )