A current of 2 A flows through a small resistor with resistance 3 Ω. What is the voltage?
A) 1 V B) 5 V C) 6 V D) 9 V Answer: C Explanation: Ohm’s law gives voltage = […]
Electricity, Every Day Science
Electricity
Electricity, Every Day Science
A current of 3 A flows through a test resistor with resistance 8 Ω. What is the voltage?
A) 24 V B) 5 V C) 11 V D) 32 V Answer: A Explanation: Ohm’s law gives voltage = […]
Electricity, Every Day Science
A current of 4 A flows through a heater element with resistance 5 Ω. What is the voltage?
A) 1 V B) 20 V C) 9 V D) 25 V Answer: B Explanation: Ohm’s law gives voltage = […]
Electricity, Every Day Science
A current of 6 A flows through a circuit component with resistance 7 Ω. What is the voltage?
A) 1 V B) 13 V C) 49 V D) 42 V Answer: D Explanation: Ohm’s law gives voltage = […]
Electricity, Every Day Science
A device such as a charger draws 4 A at 5 V. What is its electrical power?
A) 1 W B) 9 W C) 25 W D) 20 W Answer: D Explanation: Electrical power = voltage × […]
Electricity, Every Day Science
A device such as a kitchen device draws 2 A at 120 V. What is its electrical power?
A) 240 W B) 60 W C) 118 W D) 122 W Answer: A Explanation: Electrical power = voltage × […]
Electricity, Every Day Science
A device such as a portable fan draws 3 A at 10 V. What is its electrical power?
A) 7 W B) 30 W C) 13 W D) 300 W Answer: B Explanation: Electrical power = voltage × […]
Electricity, Every Day Science
A device such as a small lamp draws 2 A at 12 V. What is its electrical power?
A) 6 W B) 10 W C) 24 W D) 14 W Answer: C Explanation: Electrical power = voltage × […]
Electricity, Every Day Science
How does a fuse protect an electrical circuit?
A) It increases the battery voltage B) It stores extra current C) It produces magnetism only D) It melts and […]
Electricity, Every Day Science
Identify the term for a buildup of electric charge on a surface.
A) Insulator B) Fuse C) Static electricity D) Voltmeter Answer: C Explanation: Static electricity means a buildup of electric charge […]