Question

1 A toaster operating on 120 Volts uses a current of 12.5 A. What is the toaster’s power consumption?

The power, P₁ =1500W

What would be the power consuption of the same toaster if it is plugged into 220‑V power supply?

The power, P₂ = ?220*12.5= 2750 competer shows the answear is worng

2 Give short answers to the following questions:

A. Describe how electric force between two electrically charged objects depends on the charges. When do we have attraction and when repulsion?

B, Describe how electric force between two electrically charged objects depends on the distance between the objects.

C. What is the difference between conductors and insulators?

Answer 1

1) initial voltage Vi 120 V initial current ! I, = 12:5 A so. relistance : R= >TH 120 12.5 r . R = 9.6r new voltage : V2 = 220 V So current ! V2 11 an 220 9-6 A R Hence new power ! P. V₂ Iz 2 220 x 220 1 w 9.6 P2 = 5041 67 W Answer ابعا when 2) (A) Electric force directly depends on the product of two charges : Fe a 9,92 The force be atlractive both charges are of opposite sign [(e,t) or (+,-)] and it will be repulsive When charges of same sign [c+,+) or (-,-)]. (B) Electric force inversely proportional to the the square of distance between L d² (C) Conductors allow electricity to pass through them while insulators both are is charge :- Fe щ don't