MCQ
In an $A$.C. circuit the current
- AAlways leads the voltage
- BAlways lags behind the voltage
- CIs always in phase with the voltage
- ✓May lead or lag behind or be in phase with the voltage
✓
Answer
Correct option: D.
May lead or lag behind or be in phase with the voltage
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A planet of mass $M$ has a satellite of mass $m$, revolving around the planet in a circular orbit of radius $r$ and time period $T$. The mass $(M)$ of the planet is
→Spherical balls of radius ' $r$ ' are falling in a viscous fluid of viscosity ' $\eta$ ' with a velocity ' $v$ '. The retarding viscous force acting on the spherical ball is
→A body of mass $50 \mathrm{~kg}$ is projected vertically upwards with velocity of $100 \mathrm{~m} / \mathrm{sec} .5$ seconds after this body breaks into $20 \mathrm{~kg}$ and $30 \mathrm{~kg}$. If $20 \mathrm{~kg}$ piece travels upwards with $150 \mathrm{~m} / \mathrm{sec}$, then the velocity of other block will be
→A simple pendulum hangs from the ceiling of a car. If the car accelerates with a uniform acceleration, the frequency of the simple pendulum will
Which of the following system of units is not based on units of mass, length and time alone
The $P-V$ diagram shows seven curved paths (connected by vertical paths) that can be followed by a gas. Which two of them should be parts of a closed cycle if the net work done by the gas is to be at its maximum value
→For which combination of working temperatures the efficiency of Carnot's engine is highest
Two identical balls $A$ and $B$ each of mass $0.1 kg$ are attached to two identical massless springs. The spring mass system is constrained to move inside a rigid smooth pipe bent in the form of a circle as shown in the figure. The pipe is fixed in a horizontal plane. The centres of the balls can move in a circle of radius $0.06 m$. Each spring has a natural length of $0.06 \pi m$ and force constant $0.1 N / m$. Initially both the balls are displaced by an angle $\theta=\pi / 6$ radian with respect to the diameter $P Q$ of the circle and released from rest. The frequency of oscillation of the ball $B$ is
→If a power of $100 W$ is being supplied across a potential difference of $200 V$, current flowing is
→In the context of accuracy of measurement and significant figures in expressing results of experiment, which of the following is/are correct(1) Out of the two measurements $50.14 cm$ and 0.00025 ampere, the first one has greater accuracy(2) If one travels $478 km$ by rail and $397 m$. by road, the total distance travelled is $478 km$.
→