AP EAMCET · PHYSICS · Alternating Current
A AC is applied to a circuit consisting of a resistor and a coil with negligible resistance. If the voltage across the resistor is , the voltage across the coil is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
As the resistance and coil or inductor are in series with power supply, therefore the voltage in the inductor will lead the voltage in resistor by 90°, the phasor diagram is, So, Vnet=20 V=VR2+VI2 and given that VR=12 V Therefore, VI=202-122=16 V Hence, voltage across the…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from PHYSICS
- A particle is released freely from a height \(H\). At a certain height, its kinetic energy is two times of its potential energy. Then, the height and the speed of the particle at that instant are respectively
( \(g=\) acceleration due to gravity)AP EAMCET 2018 Medium - In Young's double slit experiment, two slits are placed 2 mm from each other. Interference pattern is observed on a screen placed 2 m from the plane of the slits. Then the fringe width for a light of wavelength 400 nm isAP EAMCET 2024 Easy
- In a metre bridge experiment, the ratio of the left gap resistance to right gap resistance is \(2: 3\), the balance point from left isAP EAMCET 2007 Easy
- If ' \(n\) ' electrons are placed on each of the two small spheres with their centres spaced \(3 \mathrm{~cm}\) apart so that they repel each other by a force of \(10^{-19} \mathrm{~N}\) then ' \(\mathrm{n}\) ' will be
\(\left[\frac{1}{4 \pi \varepsilon_0}=9 \times 10^9 \mathrm{Nm}^2 \mathrm{C}^{-2}\right]\)AP EAMCET 2017 Easy - A car of mass \(1000 \mathrm{~kg}\) has a motor of efficiency \(20 \%\). If burning of one litre of petrol supplies \(6 \times 10^7 \mathrm{~J}\) of energy, the amount of petrol used in accelerating the car from rest to \(43.2 \mathrm{~km} \mathrm{~h}^{-1}\) isAP EAMCET 2017 Hard
- A mass \(M \mathrm{~kg}\) is suspended by a weightless string. The horizontal force required to hold the mass at \(60^{\circ}\) with the vertical isAP EAMCET 2014 Easy
More PYQs from AP EAMCET
- \(\int_1^3 x^n \sqrt{x^2-1} d x=6\), then \(n=\)AP EAMCET 2022 Medium
- Let \(P(x)=x^4+a x^3+b x^2+c x+d\) be such that \(x=0\) is the only real root of \(\mathrm{P}^1(\mathrm{x})=0\). If \(\mathrm{P}(-1) < \mathrm{P}(1)\), then in the interval \([-1,1]\)AP EAMCET 2025 Hard
- Match the following:
The correct answer isList - I (Transition metal, M) List - II \(\left(\mathrm{E}_{\mathrm{M}^{2+}/ \mathrm{M}}^{\ominus}\right)\) A) Ni I) -1.18 B) Mn II) -0.91 C) Fe III) -0.25 D) Cr IV) -0.44 AP EAMCET 2025 Easy - If \(\mathrm{P}=\tan 15^{\circ}+\cot 15^{\circ}, \mathrm{Q}=\tan 22 \frac{1^{\circ}}{2}+\cot 22 \frac{1}{2}_2^{\circ}\) and \(\mathrm{R}=\sin 54^{\circ}+\sin 18^{\circ}\), then their ascending order isAP EAMCET 2023 Medium
- The angle made by the vector with the plane represented by isAP EAMCET 2019 Easy
- AP EAMCET 2021 Easy