Download App

Electromagnetic Induction — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectromagnetic Induction1 Mark
MCQ
Two identical cycle wheels (geometrically) have different number of spokes connected from center to rim. One is having 20 spokes and the other having only 10 (the rim and the spokes are resistanceless). One resistance of value R is connected between center and rim. The current in R will be.
  • A
    double in the first wheel than in the second wheel
  • B
    four times in the first wheel than in the second wheel
  • C
    will be double in the second wheel than that of the first wheel
  • D
    will be equal in both these wheels
✓

Answer

  1. will be equal in both these wheels

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Electromagnetic Induction→Electromagnetic Induction — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

The force between point charges kept in vacuum is 18 Newton. If a glass plate of dielectric constant 6 is placed between these charges, then the value of force will be:
→

In which of the following remote sensing technique is not used

(a) Forest density

(b) Pollution

(c) Wetland mapping

(d) Medical treatment
→
The figure shows a process on a gas in which pressure and volume both change. The molar heat capacity for this process is C.
  1. C = 0
  2. C = Cv
  3. C > Cv
  4. C < Cv
→
Consider the following two statements:
  1. Linear momentum of the system remains constant.
  2. Centre of mass of the system remains at rest.
  1. ​​​​​​A implies B and B implies A.
  2. A does not imply B and B does not imply A.
  3. A implies B but B does not imply A.
  4. B implies A but A does not imply B.
→

Two identical induction coils each of inductance L joined in series are placed very close to each other such that the winding direction of one is exactly opposite to that of the other, what is the net inductance

(a) L2

(b) 2L

(c) L/2

(d) Zero
→

The ratio of intensities of two waves is 9 : 1. They are producing interference. The ratio of maximum and minimum intensities will be

(a) 10 : 8

(b) 9 : 1

(c) 4 : 1

(d) 2 : 1
→

If two lenses of +5 diopters are mounted at some distance apart, the equivalent power will always be negative if the distance is

(a) Greater than 40 cm

(b) Equal to 40 cm

(c) Equal to 10 cm

(d) Less than 10 cm
→

The eye can detect 5 × 104 photons per square metre per sec of green light (l = 5000 Å) while the ear can detect  . The factor by which the eye is more sensitive as a power detector than the ear is close to

(a) 5 

(b) 10

(c) 106     

(d) 15
→
The net electric flux through a closed surface is:
→
The separation between the plates of a charged parallel-plate capacitor is increased. Which of the following quantities will change?
  1. Charge on the capacitor.
  2. Potential difference across the capacitor.
  3. Energy of the capacitor.
  4. Energy density between the plates.
→