Question

10. An electric iron draws a current of 4A when connected to a 220 V mains. its resistance must be
(a)1000
(b) 55
(c) 44
(d) none of these
11. The fixed resistance is called
(a)Rheostat (b)resistor
(c)Key
(d)switch​

Answer 1

Answer:

none of these

resistor

Answer 2

Answer:

10.(b)

11.(b)

Explanation:

V=IR

220=4A×R

220/4=R

R=55