EASY
12th ICSE
IMPORTANT
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Select the wrong statement: The heat produced in a current-carrying conductor depends upon:

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Important Questions on Alternating Current

EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 12 - Alternating Current>QUESTIONS>Q 7

The rms value of potential difference V shown in the figure is :    

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EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 12 - Alternating Current>QUESTIONS>Q 8
The inductive reactance of a coil is 1000 Ω. If its inductance and the frequency of AC supply are both doubled, then the reactance will become :
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 12 - Alternating Current>QUESTIONS>Q 9
Same current flows in two separate AC circuits. The first circuit contains inductance only, while the second contains capacitance only. If the frequency of the applied voltage increases, the current
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 12 - Alternating Current>QUESTIONS>Q 10
An inductance and a resistance are connected in series with an AC potential. In this circuit:
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 12 - Alternating Current>QUESTIONS>Q 11
The dimensional formula for impedance is :
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 12 - Alternating Current>QUESTIONS>Q 12
A DC is sent into a circuit having a 10 Ω resistor and a 10 H pure inductor. The impedance of the circuit is :
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 12 - Alternating Current>QUESTIONS>Q 13
In a series AC circuit, R=100 Ω, XL=300 Ω and XC=200 Ω. The phase difference between the applied emf and the current will be :
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 12 - Alternating Current>QUESTIONS>Q 14
In an AC circuit, power is consumed in :