Three resistors 2 Ω, 3 Ω, 6 Ω are connected in parallel. Equivalent resistance is MCQ with Answer and Explanation

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Three resistors 2 Ω, 3 Ω, 6 Ω are connected in parallel. Equivalent resistance is

A. 1.5 Ω

B. 0.5 Ω

C. 1 Ω

D. 11 Ω

Answer: Option C

Solution (By JKExamLibrary)

1/R = 1/2+1/3+1/6 = 3/6+2/6+1/6 = 6/6=1 => R=1 Ω.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1 Report Error

If a stone is tied to a string and whirled in a circle, and the string suddenly breaks, the stone will:

A. Fly off tangentially to the circular path.

B. Fall straight down immediately due to gravity.

C. Fly outwards radially.

D. Move inwards towards the center.

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Correct Answer: Option A

Explanation:
When the stone is moving in a circle, its velocity vector is always tangential to the circle. The string provides the necessary centripetal force directed towards the center. When the string breaks, this inward force ceases to exist. Due to inertia of direction (Newton's First Law), the stone continues to move along the tangent at the point where the string broke.

This question belongs to: Science Physics

Question #2 Report Error

When white light passes through a glass prism, it splits into a spectrum of seven colors. Which color deviates the least?

A. Violet

B. Yellow

C. Blue

D. Red

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Correct Answer: Option D

Explanation:
Dispersion occurs because different colors of light travel at slightly different speeds inside the glass prism, meaning they have different refractive indices. Red light has the longest wavelength, the lowest refractive index in glass, and therefore deviates (bends) the least. Violet has the shortest wavelength and deviates the most.

This question belongs to: Science Physics