Current Electricity Class 12 NEET Questions. We covered all the Current Electricity Class 12 NEET Questions in this post for free so that you can practice well for the exam.
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Current Electricity Class 12 NEET Objective Questions for Students
Some pairs of devices and associated energy changes are given below. 1. Electric generator: Mechanical to electrical 2. Electric motor: Electrical to mechanical 3. Diesel engine: Light to electrical 4. Solar cell: Chemical to mechanical Which of the above pair/s is/are correctly matched?
(A) Only 1 and 2
(B) Only 1 and 3
(C) Only 2 and 4
(D) Only 3 and 4
Option a – Only 1 and 2
Assertion (A): In India, electricity distribution companies calculate the consumption of electricity in kWh. Reason (R): Electrical system in India works at a frequency of 60 Hz. Code
(A) Both (A) and (R) are true and (R) is the correct explanation of (A)
(B) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
(C) (A) is true, but (R) is false (D)
(A) is false, but (R) is true
Option c – (A) is true, but (R) is false (D)
Assertion (A): The temperature of a metal wire rises when an electric current is passed through it. Reason (R): Collision of metal atoms with each other releases heat energy. Code
(A) Both (A) and (R) are true and (R) is the correct explanation of (A)
(B) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
(C) (A) is true, but (R) is false
(D) (A) is false, but (R) is true
Option c – (A) is true, but (R) is false
Assertion (A): Light Emitting Diode (LED) lamps offer longer service life as compared to Compact Fluorescent Lamps (CFL). Reason (R): Light Emitting Diode (LED) lamps are more energy efficient as compared to Compact Fluorescent Lamps (CFL). Select the correct answer using the codes given below. Code
(A) Both (A) and (R) are true and (R) is the correct explanation of (A)
(B) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
(C) (A) is true, but (R) is false
(D) (A) is false, but (R) is true
Option a – Both (A) and (R) are true and (R) is the correct explanation of (A)
What is the difference between a CFL and an LED Lamp? 1. To produce light, a CFL uses mercury vapor and phosphor while an LED lamp uses semiconductor material. 2. The average life span of a CFL is much longer than that of an LED lamp. 3. A CFL is less energy efficient as compared to an LED lamp. Which of the statements given above is/are correct?
(A) Only 1
(B) Only 2 and 3
(C) Only 1 and 3
(D) 1, 2 and 3
Option c – Only 1 and 3
Given below are two statements, one labeled as Assertion (A) and the other labeled as Reason (R). Assertion (A): Transformer is useful for stepping up or stepping down voltages. Reason (R): Transformer is a device used in D.C. circuits. In the context of the above two statements, which one of the following is correct?
(A) Both (A) and (R) are true and (R) is the correct explanation of (A)
(B) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
(C) (A) is true, but (R) is false
(D) (A) is false, but (R) is true
Option c – (A) is true, but (R) is false
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