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In an A.C. circuit, maximum value of voltage is 423 volt. Its effective voltage is :

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Important Questions on Electromagnetic Induction

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Physics Crash Course MHT-CET>Chapter 18 - Electromagnetic Induction>Exercise 1>Q 260
A sinusoidal voltage V0sinωt is applied across a series combination of resistance R and capacitance C. The amplitude of the current in this circuit is,
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Physics Crash Course MHT-CET>Chapter 18 - Electromagnetic Induction>Exercise 1>Q 261
The peak value of the following A.C. current, i=4sinωt+4sinωt+2π3 A is,
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Physics Crash Course MHT-CET>Chapter 18 - Electromagnetic Induction>Exercise 1>Q 262
D.C. ammeter is connected in a circuit through which an A.C. of 50 Hz is flowing. The ammeter will read
 
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Physics Crash Course MHT-CET>Chapter 18 - Electromagnetic Induction>Exercise 1>Q 263
A certain A.C voltage is represented by e=100sin(100πt+0.6). The peak value of A.C is
 
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Physics Crash Course MHT-CET>Chapter 18 - Electromagnetic Induction>Exercise 1>Q 264
The general equation for the instantaneous e.m.f. of a generator (frequency 50 cycles s-1), whose peak voltage is 200 V will be,
 
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Physics Crash Course MHT-CET>Chapter 18 - Electromagnetic Induction>Exercise 1>Q 265
An alternating voltage of e=1002sin(100t) V is connected to a condenser of 0.5 μF through an A.C. ammeter. The reading of the ammeter will be, 
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Physics Crash Course MHT-CET>Chapter 18 - Electromagnetic Induction>Exercise 1>Q 266
A hot wire ammeter reads 10 A in A.C. circuit. The peak value of the current is,
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Physics Crash Course MHT-CET>Chapter 18 - Electromagnetic Induction>Exercise 1>Q 267
A 40 Ω electric heater is connected to 200 V, 50 Hz mains supply. The peak value of electric current flowing in the circuit is approximately,