Question

a torch bulb is rated 2.5 v and 750 m.a calculate resistance ?

Answer 1

❤.2.5*750*10^-3

=1.875

Answer 2

Answer:

voltage of bulb(V)= 2.5v

current (C) = 750m. a

C = 0.75Amp

then

Resistance =Voltage /current

Resistance =2.5/0.75

Resistance = 3.3ohm