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For an A.C. given by I=50cos100t+45° A . The value of  Irms=____A.
 

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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 278
A multimeter reads a voltage of a certain A.C. source as100 V. What is the peak value of voltage of A.C. source?
 
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Physics Crash Course MHT-CET>Chapter 18 - Electromagnetic Induction>Exercise 1>Q 279
In an A.C. circuit, peak value of voltage is 423 V. Its effective voltage is 
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Physics Crash Course MHT-CET>Chapter 18 - Electromagnetic Induction>Exercise 1>Q 280
A generator produces a voltage that is given by e.=240sin120t,  where t is in seconds. The frequency and r.m.s voltage are 
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Physics Crash Course MHT-CET>Chapter 18 - Electromagnetic Induction>Exercise 1>Q 281
A.C. voltmeter is connected to a source of peak voltage e0=141.4 V , then it will read
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Physics Crash Course MHT-CET>Chapter 18 - Electromagnetic Induction>Exercise 1>Q 282
In Karnataka, the normal domestic power supply AC is 220 V, 50 Hz. Here 220 V and 50 Hz refer to:
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Physics Crash Course MHT-CET>Chapter 18 - Electromagnetic Induction>Exercise 1>Q 283
The phase difference between the alternating current and voltage represented by the following equations I=I0sinωt,E=E0cosωt+π3, will be
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Physics Crash Course MHT-CET>Chapter 18 - Electromagnetic Induction>Exercise 1>Q 284
The reactance of a capacitor is X1 at the frequency n1 and X2 at the frequency n2. Then the ratio of X1 and X2 will be
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Physics Crash Course MHT-CET>Chapter 18 - Electromagnetic Induction>Exercise 1>Q 285
In an AC circuit, the current lags behind the voltage by π3. The components in the circuit are,