Tag: electric cell

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Questions Related to electric cell

Multiple choice physics electric current through conductors study about cells electric cell types of cells

What is the direction of flow of current inside a dry cell?

  1. from $+$ve to $-$ve terminal
  2. from $-$ve to $+$ve terminal
  3. from $+$ve to $+$ve terminal
  4. from $-$ve to $-$ve terminal
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The dry cell consists of a zinc can, electrolyte paste, and a carbon rod in the center. A chemical reaction takes place between the zinc can and the paste. Electrons flow from the negative (zinc) terminal to the positive (carbon) terminal. Electrons are then pumped back to the negative terminal.
Multiple choice physics electric current through conductors study about cells electric cell types of cells

The longer lead of a LED is always connected to the negative terminal of the battery and the shorter lead is connected to the posltlve terminal of the battery

  1. True

  2. False

  3. Ambiguous

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

Answer is B.
The LED bulb has two leads. The lead connected to the positive terminal of battery is called anode and the lead connected to the negative terminal is cathode. The slightly longer lead than the other is always connected to the positive terminal and the shorter lead is connected to the negative terminal.
Hence, the given statement is false.