Question

A Torch bulb is rated 3v and 0,75A. Calculate the resistance in the bulb

Answer 1

Answer:

v=ir

r=v/i

r=3/0.75

r=300/75

r=100/25

r=4 ohm

Explanation:

since, from ohm 'S law

v=ir

so, r=v/i

Answer 2

Explanation:

v =ír

3= 0.75r

R= 3/0.75

R= 3*100/75

R =4