Explanation

Explanation

The total resistance (R) in the series circuit is:

R = 5 + 10 + 10

= 25 Ω

The current (I) is given by Ohm's law:

I = V/R

= 50V / 25Ω

= 2A

Explanation

On and Upon

On = (Placed in contact)

Upon = (In Motion)

The books were on the table

The dog jumped upon the cat.

Explanation

I hope they will not have left the city before I reach there.

مجھے امید ہے کہ میرے وہاں پہنچنے سے پہلے وہ شہر چھوڑ کر نہیں گئے ہوں گے۔

The sentence talks about a future action ("before I reach there") 

Future completed action is the future perfect:

will not have + past participle

"Will not have left" shows:

A completed action in the future

That you hope they are still there when you arrive

Explanation

 The dimensions of Planck's constant are the same as those of angular momentum. 

Planck's constant (h) is a fundamental constant in quantum mechanics

It relates the energy (E) of a photon to its frequency (ν) through the equation E = hν.

The dimensions of Planck's constant can be derived from this relationship,

And they are found to be the same as those of angular momentum

Explanation

The yellowing of leaves due to lack of chlorophyll is called chlorosis.

This condition occurs when the green pigment, chlorophyll, is reduced or absent in the leaves, causing them to turn yellow. 

Explanation

"Minutes ago" indicates a completed action in the past, so simple past tense is used.

Correct sentence: "He went out five minutes ago."

Explanation

To prepare 250 cm³ (or 250 mL) of a 1 M NaOH solution, you need 10 grams of NaOH.

This is because the molar mass of NaOH is 40 g/mol, and a 1 M solution contains 1 mole of solute per liter of solution.

Therefore, 250 mL (0.25 L) of a 1 M solution would require 0.25 moles of NaOH, which translates to 10 grams (0.25 moles * 40 g/mol). 

Explanation

The correct proverb is: "The wearer knows where the shoe pinches," meaning only the person experiencing something knows the discomfort.

Present tense "pinches" is used for general truth.

Explanation

A carburetor uses the principle of Bernoulli's equation, which states that as the speed of a fluid increases, its pressure decreases.

In a carburetor, air flows through a constricted section called a venturi.

This increased airflow creates a lower pressure area, which then draws fuel from the fuel reservoir into the air stream, effectively mixing them.