NEET Physics: Questions 737 - 741 of 2099
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2099 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.
Rs. 550.00 or
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
Read the passage given below and answer the questions that follow:
A system consists of block A and B each of mass m connected by a light spring as shown in the figure with block B in contact with a wall. The block A compresses the spring by 3mg /k from natural length of spring and then released from rest. Neglect friction anywhere.
Question number: 739 (1 of 3 Based on Passage) Show Passage
Question number: 740
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: 741
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|