MHT CET 2023 13th May Morning Shift | Electromagnetic Induction Question 48 | Physics

A transformer has 20 turns in the primary and 100 turns in the secondary coil. An ac voltage of $$\mathrm{V}_{\text {in }}=600 \sin 314 \mathrm{t}$$ is applied to primary terminal of transformer. Then maximum value of secondary output voltage obtained in volt is

600

300

3000

6000

MHT CET 2023 12th May Evening Shift

MCQ (Single Correct Answer)

-0

SI units of self inductance is

$$\frac{\mathrm{V}-\mathrm{A}}{\mathrm{S}}$$

$$\frac{\mathrm{V}}{\mathrm{A}-\mathrm{S}}$$

$$\frac{\mathrm{V}-\mathrm{S}}{\mathrm{A}}$$

$$\frac{\mathrm{A}}{\mathrm{V}-\mathrm{S}}$$

MHT CET 2023 12th May Evening Shift

MCQ (Single Correct Answer)

-0

An air craft of wing span $$40 \mathrm{~m}$$ files horizontally in earth's magnetic field $$5 \times 10^{-5} \mathrm{~T}$$ at a speed of $$500 \mathrm{~m} / \mathrm{s}$$. The e.m.f. generated between the tips of the wings of the air craft is

0.5 V

1 V

1.2 V

1.5 V

MHT CET 2023 12th May Evening Shift

MCQ (Single Correct Answer)

-0

Inductance per unit length near the middle of a long solenoid is $$\left(\mu_0=\right.$$ permeability of free space, $$\mathrm{n}=$$ number of turns per unit length, $$\mathrm{d}=$$ the diameter of the solenoid)

$$\mu_0 \pi\left(\frac{\mathrm{nd}}{2}\right)^2$$

$$4 \mu_0 \pi\left(\frac{\mathrm{nd}}{2}\right)$$

$$\left(\frac{\mu_0 \pi n d}{2}\right)$$

$$\frac{4 \mu_0 \pi}{\mathrm{n}^2 \mathrm{~d}^2}$$

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