Tag: physics

Quizzes (598) Questions (13441)

Questions Related to physics

Multiple choice physics current electricity electric cells and batteries

What is advantage of primary cell over secondary cell

  1. Its internal resistance is low

  2. It is light and cheap

  3. It can provide low/high currents

  4. It is rechargable
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Primary cells are light and cheap. All other options apply to secondary cell.

Multiple choice physics current electricity electric cells and batteries

Primary cells are

  1. Recyclable

  2. Use and throw

  3. Rechargable

  4. Retractable
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Primary cells are use and throw. They are not recyclable since structure is carefully packed. They are not rechargable since chemical reactions involved are not recyclable. 

Multiple choice physics current electricity electric cells and batteries

Primary cells have _____ resistance and secondary cells have ______ resistance

  1. Low , High

  2. High, Low

  3. Low , Low

  4. High , High
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Primary cells have high internal resistance while secondary cells have low internal resistance.

Multiple choice physics current electricity electric cells and batteries

Which one of the following primary cells has emf 1.08 volts and which remains fairly constant?

  1. Daniel cell

  2. Simple voltaic cell

  3. Leclanche cell

  4. Dry cell
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Dry cell have a typical voltage of around 1.1 Volts.They become inadequate for use with time because their internal resistance increases many fold.

Multiple choice physics current electricity electric cells and batteries

The primary cell which is used in daily life is-

  1. Leclanche cell

  2. Dry cell

  3. Daniel cell

  4. Simple voltaic cell
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Commonly used cell is dry cell.

Dry-cell is essentially comprised of a metal electrode or graphite rod {elemental carbon} surrounded by a moist electrolyte paste enclosed in a metal cylinder. in most common type of dry cell battery the cathode u=is composed of a form of elemental carbon called graphite.

Multiple choice physics current electricity electric cells and batteries

The current capacity of the charged secondary cell does not depend on ?

  1. rate of charging

  2. rate of discharging

  3. temperature

  4. amount of active material
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The current capacity of the charged secondary cell does not depend on temperature. so if the temperature is increased or decreased there is no any change in current capacity of any secondary cell, hence option C is correct.

Multiple choice physics current electricity electric cells and batteries

Cell which cannot be charged is 

  1. Primary cell

  2. Secondary cell

  3. Electrochemical cell

  4. None of the above

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A primary cell cannot be charged whereas secondary and electrochemical cell can be recharged.charging of a cell depends upon cell reaction is either reversible or irreversible . when reaction is irreversible then cell can not be charge after one time discharge.

Multiple choice physics current electricity and magnetism electric cells and batteries

When two batteries are connected in series the voltage in the circuit will _____________ .

  1. increase

  2. decrease

  3. remains same

  4. first decrease than increase
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In a series connection the positive terminal of the first battery is connected to the negative terminal of the second battery.

And the Equivalent voltage of the battery is the sum of the voltage of individual cell.So, when two batteries are connected in series the voltage in the circuit will increases.
Therefore, A is correct option.

Multiple choice physics current electricity and magnetism electric cells and batteries

Choose the wrong option

  1. A cell is a single unit which converts chemical energy to electrical energy to deliver a voltage while a battery is composed of a number of cells in series to get increased voltage

  2. A Battery is a single unit which converts chemical energy to electrical energy to deliver a voltage while a cell is composed of a number of batteries in series to get increased voltage

  3. In the combination of cells, cells are connected in such a way that negative terminal of a cell is connected to positive terminal of the next cell

  4. In the combination of cells, cells are connected in such a way that negative terminal of a cell is connected to negative terminal of the next cell
Reveal answer Fill a bubble to check yourself
B,D Correct answer
Explanation

Both cell and battery store the chemical energy and then transforms the stored chemical energy to electrical energy. But cell is a single unit with positive and negative terminal whereas battery is a combination of cells connected end to end i.e. positive  to negative terminal.