MCQ
If we increase the driving frequency in a circuit with a purely resistive load, then amplitude $VR.$
- ✓remain in the same
- Bincrease
- Cdecrease
- Dnone
✓
Answer
Correct option: A.
remain in the same
We know that $VR$ does not depend on driving frequency in a purely resistive circuit. So, If we increase the driving frequency in a circuit with a purely resistive load, then amplitude remain in the same.
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
Switch $S$ is closed at $t = 0$, in the circuit shown. The change in flux in the inductor $(L=500\, mH)$ from $t = 0$ to an instant when it reaches steady state is ......$wb$
→A positive point charge $q$ is placed at a distance $2 R$ from the surface of a metallic shell of radius $R$. The electric field at centre of shell due to induced charge has magnitude
→Solid targets of different elements are bombarded by highly energetic electron beams. The frequency (f) of the characteristic X-rays emitted from different targets varies with atomic number Z as
The magnetic field at a distance r from a long wire carrying current i is 0.4 Tesla. The magnetic field at a distance 2r is
The output of a step-down transformer is measured to be $24V$ when connected to a $12$ watt light bulb. The value of the peak current is:
→Two metal spheres $A$ and $B$ of radii $a$ and $b(a < b)$ respectively are at a large distance apart. Each sphere carries a charge of $100 \mu C$. The spheres are connected by a conducting wire, then
→A semiconductor device is connected in a series circuit with a battery and a resistance. A current is found to pass through the circuit. If the polarity of the battery is reversed, the current drops almost to zero. The device may be
Radio waves coming at $\angle \, \alpha$ to vertical are recieved by a radar after reflection from a nearby water surface & directly. What should be height of antenna from water surface so that it records a maximum intensity. (wavelength $= \lambda$ ).
→We wish to make a microscope with the help of two positive lenses both with a focal length of $20\, mm$ each and the object is positioned $25\, mm$ from the objective lens. How far apart the lenses should be so that the final image is formed at infinity?......$mm$
→A $50 \,mH$ coil carries a current of $2$ ampere. The energy stored in joules is
→