Tag: electric cells and batteries

Questions Related to electric cells and batteries

Choose the wrong option

physics current electricity and magnetism electric cells and batteries

  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

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Correct Option: B,D
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.

While making a battery ___________  of a cell is connected to ________ of other cell.

physics current electricity and magnetism electric cells and batteries

  1. negative terminal , negative terminal

  2. positive terminal , negative terminal

  3. positive terminal , positive terminal

  4. neutral terminal ,negative terminal

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Correct Option: B
Explanation:

While making a battery, negative end of battery is connected to positive terminal of other cell and so on.


Answer-(B)

When the two terminals of a battery are connected directly with a wire then:

physics electricity electric cells and batteries

  1. More electrical energy is stored in the cell

  2. The chemicals get used up very fast

  3. No current flows in the wire

  4. None of these

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Correct Option: B
Explanation:
When the two terminals of a battery are connected directly with a wire there will be a low resistance path for the current to flow. The wire will get heated a little bit (depends on the diameter of the wire less the diameter more heat) and the battery will be quickly discharged. During depletion, it may become very hot, emit gasses, and possibly explode. The shorting wires will draw heavy current that may melt the wire or even cause them to soften and break.

Many devices such as.............. use batteries-

physics electricity electric cells and batteries

  1. Torches

  2. Transistors, toys

  3. T.V. remote controls

  4. All of these

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Correct Option: D
Explanation:

Many devices such as----------------use battery 

Torches 
Transistors, toys 
T.V remote controls
All of these use batteries.