Physics Chemistry & Biology Test 3
Materials which allows flow of charge is called as ?
  • Both a and b
  • None of the above
Explanation:

Materials that allow the flow of electric charge are called electrical conductors.

Examples include metals like copper, aluminum, and silver, which are commonly used in electrical wiring and components.

If the direction of flow of current varies from positive to negative and negative to positive alternatively is called
  • AC Current
  • DC Current
  • Both a and b
  • None of the above
Explanation:

If the direction of flow of current varies from positive to negative and negative to positive alternatively, it is called AC Current (Alternating Current).

Current is expressed as ? Note: q = Charge; t = time
  • q × t
  • q + t
  • q – t
  • q / t
Explanation:

Electric current is the rate at which electric charge flows through a conductor. It is measured in amperes (A) and is calculated using the formula: I=q/t

Rate of flow of charge is called as ?
  • Static electricity
  • DC electricity
  • AC electricity
  • Electricity
Explanation:

Electricity is the rate at which electric charge flows through a conductor, carrying energy from one point to another in the form of current, measured in amperes (A).

In Xerox, which of the following electricity is used ?
  • Static electricity
  • DC electricity
  • Both a and b
  • None of the above
Explanation:

In xerography (the technology used in photocopying), static electricity plays a key role in attracting toner particles to the areas of the drum that correspond to the image being copied.

Size of a soap bubble increases when we apply ?
  • Opposite charges
  • Same Charges
  • Both a and b
  • None of the above
Explanation:

The size of a soap bubble increases when same charges are applied, as the like charges repel each other, causing the bubble's surface to expand.

Which of the following scientist classified charge into 2 types, i e., Positive and negative charge ?
  • Benjamin Franklin
  • Henry
  • Thomas Alva Edison
    • Explanation:

    Benjamin Franklin was the scientist who classified electric charge into two types, positive and negative, based on his experiments with electricity.