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Electrical energy is transmitted over large distances at high
Physics Exemplar
Physics Exemplar

Class 12

NCERT Exemplar

Publisher:
NCERT
Subject:
Physics
1

Chapter 1: Electric Charges and Fields

32 questions

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2

Chapter 2: Electrostatic Potential and Capacitance

33 questions

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3

Chapter 3: Current Electricity

31 questions

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4

Chapter 4: Moving Charges and Magnetism

29 questions

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5

Chapter 5: Magnetism and Matter

25 questions

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6

Chapter 6: Electromagnetic Induction

32 questions

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7

Chapter 7: Alternating Current

31 questions

Q1
In an alternating current circuit consisting of elements in series, the current increases on increasing the frequency of the supply. Which of the following elements are likely to constitute the circuit?
Q2
Electrical energy is transmitted over large distances at high alternating voltages. Which of the following statements is (are) correct?
Q3
For a circuit, the power transferred from the driving source to the driven oscillator is
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8

Chapter 8: Electromagnetic Waves

32 questions

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9

Chapter 9: Ray Optics and Optical Instruments

32 questions

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10

Chapter 10: Wave Optics

23 questions

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11

Chapter 11: Dual Nature of Radiation and Matter

29 questions

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12

Chapter 12: Atoms

29 questions

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13

Chapter 13: Nuclei

26 questions

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14

Chapter 14: Semiconductor Electronics

40 questions

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15

Chapter 15: Communication System

30 questions

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Question
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Solving time: 3 mins

Electrical energy is transmitted over large distances at high alternating voltages. Which of the following statements is (are) correct?

SELECT MULTIPLE OPTION

A
For a given power level, there is a lower current

B
Lower current implies less power loss

C
Transmission lines can be made thinner

D
It is easy to reduce the voltage at the receiving end using step-down transformers

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Views: 5,930 students

Updated on: Nov 5, 2022

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Physics Exemplar (NCERT Exemplar)

Text SolutionText solutionverified iconVerified

We have to transmit energy (power) over large distances at high alternating voltages, so current flowing through the wires will be law because for a given power .

Power loss rms law
is law)
Now at the receiving end high voltage is reduced by using step-down transformers.
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Question Text
Electrical energy is transmitted over large distances at high alternating voltages. Which of the following statements is (are) correct?
Updated OnNov 5, 2022
TopicAlternating Current
SubjectPhysics
ClassClass 12
Answer TypeText solution:1 Video solution: 2
Upvotes379
Avg. Video Duration11 min