Explanation

Explanation

- Resistivity (ρ) is a measure of how strongly a material opposes the flow of electric current.

- The reciprocal of resistivity is called conductivity (σ).

Mathematically:  

σ = 1 / ρ

- Conductivity indicates how easily a material allows the flow of electric current.

- The other options:  

  - Impedance relates to resistance and reactance in AC circuits.  

  - Admittance is the reciprocal of impedance.  

  - Resistance is the opposition to current flow but depends on dimensions, unlike resistivity.

Explanation

In a normal 28-day menstrual cycle, you would expect the LH surge to occur between Days 11-14.

This surge triggers ovulation, which typically happens around day 14. 

The luteinizing hormone (LH) surge occurs around the midpoint of the cycle, which is day 14 for a 28-day cycle.

Explanation

It rained all night; as a result, the roads were flooded in the morning.

The first clause says it rained all night, and the second clause says the roads were flooded.

The flooding happened because it rained all night, so the second clause is a consequence of the first.

Explanation

The correct word is explanation.

So the sentence should be:  

The manager accepted the cashier’s explanation for being late.

Explanation

The board of directors expressed their disappointment with the financial results

- Board of directors is a collective noun representing a group of people.  

- When talking about a group acting as individuals, we use a plural possessive pronoun.  

- Since the board consists of multiple directors, "their" is appropriate. 

Explanation

"Elated" means joyful. In this context, she was excited or overjoyed about getting first position.

Explanation

The teaching staff asked the principal, "What time would the meeting start?"

- Proper punctuation includes a comma before the quote, and the question mark inside the quotation marks.

- Also, “teaching” should not be capitalized unless it's a proper noun.

Explanation

Imtiaz Invited me on a dinner party at restaurant

- "Dinner" is spelled correctly.  

- "Restaurant" is also spelled correctly.  

- The other options contain spelling errors like "diner", "resturant", or "dinnar".

Explanation

Poor training leads to improper use of equipment, making it the main cause of accidents.

While the other factors contribute, lack of training is the root issue in most cases.