Physics-
General
Easy
Question
The voltage across a pure inductor is represented by the following diagram. Which one of the following diagrams will represent the current
The correct answer is:
In purely inductive circuit voltage leads the current by 90o.
Related Questions to study
Physics-
Two sinusoidal voltages of the same frequency are shown in the diagram. What is the frequency, and the phase relationship between the voltages
Frequency in Hz Phase lead of N over M in radians</span
Two sinusoidal voltages of the same frequency are shown in the diagram. What is the frequency, and the phase relationship between the voltages
Frequency in Hz Phase lead of N over M in radians</span
Physics-General
Physics-
When an ac source of e.m.f. 
is connected across a circuit, the phase difference between the e.m.f. e and the current i in the circuit is observed to be 
, as shown in the diagram. If the circuit consists possibly only of RC or LC in series, find the relationship between the two elements [IIT-JEE (Screening) 2003]
When an ac source of e.m.f. is connected across a circuit, the phase difference between the e.m.f. e and the current i in the circuit is observed to be , as shown in the diagram. If the circuit consists possibly only of RC or LC in series, find the relationship between the two elements [IIT-JEE (Screening) 2003]
Physics-General
Physics-
The current 'i' in an inductance coil varies with time 't' according to following graph
Which one of the following plots shows the variations of voltage in the coil
The current 'i' in an inductance coil varies with time 't' according to following graph
Which one of the following plots shows the variations of voltage in the coil
Physics-General
Physics-
The output current versus time curve of a rectifier is shown in the figure. The average value of output current in this case is
The output current versus time curve of a rectifier is shown in the figure. The average value of output current in this case is
Physics-General
Physics-
A constant voltage at different frequencies is applied across a capacitance C as shown in the figure. Which of the following graphs
Correctly depicts the variation of current with frequency ?
A constant voltage at different frequencies is applied across a capacitance C as shown in the figure. Which of the following graphs
Correctly depicts the variation of current with frequency ?
Physics-General
Physics-
The r.m.s. voltage of the wave form shown is
The r.m.s. voltage of the wave form shown is
Physics-General
Physics-
The figure shows variation of R, XL and XC with frequency f in a series L, C, R circuit. Then for what frequency point, the circuit is inductive
The figure shows variation of R, XL and XC with frequency f in a series L, C, R circuit. Then for what frequency point, the circuit is inductive
Physics-General
Physics-
The variation of the instantaneous current (I) and the instantaneous emf (E) in a circuit is as shown in fig. Which of the following statements is correct
The variation of the instantaneous current (I) and the instantaneous emf (E) in a circuit is as shown in fig. Which of the following statements is correct
Physics-General
Physics-
Is it possible
Is it possible
Physics-General
Physics-
In the adjoining figure the impedance of the circuit will be
In the adjoining figure the impedance of the circuit will be
Physics-General
Physics-
In the adjoining ac circuit the voltmeter whose reading will be zero at resonance is
In the adjoining ac circuit the voltmeter whose reading will be zero at resonance is
Physics-General
Physics-
An ac source of angular frequency 
is fed across a resistor r and a capacitor C in series. The current registered is I. If now the frequency of source is changed to /3 (but maintaining the same voltage), the current in then circuit is found to be halved. Calculate the ratio of reactance to resistance at the original frequency
An ac source of angular frequency is fed across a resistor r and a capacitor C in series. The current registered is I. If now the frequency of source is changed to /3 (but maintaining the same voltage), the current in then circuit is found to be halved. Calculate the ratio of reactance to resistance at the original frequency
Physics-General
Physics-
The reading of ammeter in the circuit shown will be
The reading of ammeter in the circuit shown will be
Physics-General
Physics-
In the circuit shown in the figure, the ac source gives a voltage 
Neglecting source resistance, the voltmeter and ammeter reading will be
In the circuit shown in the figure, the ac source gives a voltage Neglecting source resistance, the voltmeter and ammeter reading will be
Physics-General
Physics-
In the circuit shown in figure neglecting source resistance the voltmeter and ammeter reading will respectively, will be
In the circuit shown in figure neglecting source resistance the voltmeter and ammeter reading will respectively, will be
Physics-General
