Domestic Electric Circuits MCQs

Q1. Scenario: A small fan motor of effective resistance 1100 ohm runs on the 220 V household mains supply. Question: What is the rated power consumption of the appliance (watts)?

• A.44 W
• B.242000 W
• C.5 W
• D.1320 W

Answer: A. 44 W

Q2. Scenario: An electric mixer of effective resistance 484 ohm draws power from the 220 V mains during cooking. Question: What is the rated power consumption of the appliance (watts)?

• A.2.2 W
• B.704 W
• C.100 W
• D.106480 W

Answer: C. 100 W

Given 484 ohm, 220 V, asked for What is the rated power consumption of the appliance (watts)?. By hence the answer = 100 W. hence the answer = 100 W. an ionic bond forms when a metal donates electrons to a non-metal: e.g. Thus option C) 100 W. Others fail: option A) '2.2 W' is incorrect: Inverted ratio; P = V^2/R, not R/V; option B) '704 W' fails since Adding V and R is dimensionally wrong; use P = V^2/R.

Q3. Scenario: A clothes dryer with effective resistance 880 ohm runs on 220 V mains. Question: What is the rated power consumption of the appliance (watts)?

• A.4 W
• B.55 W
• C.1100 W
• D.193600 W

Answer: B. 55 W

Given 880 ohm, 220 V, asked for What is the rated power consumption of the appliance (watts)?. By hence the answer = 55 W. hence the answer = 55 W. an ionic bond forms when a metal donates electrons to a non-metal: e.g. Hence option B) 55 W. Others fail: option A) '4 W' doesn't hold - Inverted ratio; P = V^2/R, not R/V; option C) '1100 W' fails since Adding V and R is dimensionally wrong; use P = V^2/R.