NEET Physics: Questions 737 - 740 of 2099
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Question number: 737
In an L - R circuit, the value of L is henry and the value of R is 30 ohm. If in the circuit, an alternating e. m. f. of 200 volt at 50 cycles per sec is connected, the impedance of the circuit and current will be
40.4 Ω, 5A
30.7 Ω, 6.5A
50 Ω, 4A
Question number: 738
Question number: 739
An alternating current of frequency is flowing in a circuit containing a resistor of resistance R and a choke of inductance L in series. The impedance of this circuit is
Question number: 740
The alternating current lags behind the emf by a phase angle of , when ac flows through an inductor.
The inductive reactance increases as the frequency of ac source decreases.
|a.||Both Ꭺ and Ꭱ are false|
|b.||Ꭺ is true but Ꭱ is false|
|c.||Ꭺ is false but Ꭱ is true|
|d.||Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ|