Question

1.An electric iron has a rating of 1000W, 220V. Calculate (i) current passing through it and (ii) its resistance

Answer 1

Explanation:

750/220 = 3.40Amp. In iron flow of current is 3.40 Amp. R stands for resistance of material. R= 64.60 ohm.

I = ? (current passing through the resistance)

P= 1000 w (power)

V= 220 V (Voltage)

R (resistance) = V^2/P

R = (220)(220)/1000

R = 48.4 ohm

Also,

R = V/I

48.4 = 220/I

I = 220/48.4

I = 4.54 A

Answer 2

Answer:

see the attachment hope it helps you♡