Physics, asked by Trumping, 7 months ago

Q22. Three 2V cells are connected in series and used as battery in a circuit.

a) What is the p.d at the terminals of the battery?

b) How many joules of electric energy does 1C gain on passing through one cell and all the three cells?

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Answers

Answered by Anonymous
11

(1)Question :-

Three 2V cells are connected in series and used as battery in a circuit.

Answer :-

\longrightarrowWhen three cells with 2 volts respectively are connected in series for the construction of the battery, then the total potential difference between the terminals of the battery will be 6V.

(2)Question :-

What is the p.d at the terminals of the battery?

Answer :-

[ For one cell :- ]

Given,

  • Potential difference (V) = 2V

  • Charge moved (Q) = 1C

We know that,

\green\bigstar V = W/Q

[ Put the values ]

\longrightarrow 2 = W/1

\longrightarrow W = 2 × 1

\longrightarrow W = 2 J \pink\bigstar

Therefore,

Work done to move a charge of 1C with the potential difference of 2V is 2J.

(3)Question :-

How many joules of electric energy does 1C gain on passing through one cell and all the three cells?

Answer :-

[ For three cells :- ]

Given,

  • Potential difference (V) = 6V

  • Change moved (Q) = 1C

We know that,

\red\bigstar V = W/Q

[ Put the values ]

\longrightarrow 6 = W/1

\longrightarrow W = 6 × 1

\longrightarrow W = 6 J \blue\bigstar

Therefore,

To move 1C charge with a potential difference of 6V, the work done is 6J.

Answered by Anonymous
40

\underline{\underline{\red{\bigstar\mapsto}}}Question:-

⠀ ⠀⠀

Three 2V cells are connected in series and used as battery in a circuit.

a) What is the p.d at the terminals of the battery?

b) How many joules of electric energy does 1C gain on passing through one cell and all the three cells?

⠀ ⠀⠀

\underline{\underline{\green{\bigstar\mapsto}}}Calculation:-

a) P.D [potential difference] at the terminals of the battery

 \sf \bullet Let \:   V_1,V_2,V_3 \: be \: the \: three \: cells \: of \: p.d \longrightarrow\blue{2v}

⠀ ⠀⠀

Now, Total Potential difference across three cells

 \sf \:  \: V_1  + V_2 + V_3 =( 2 + 2 + 2)v = \red{ 6v}

⠀ ⠀⠀

b)Electrical energy does it gain on passing 1C charge through one cell

⠀ ⠀

•For one cell ,P.D(V)=2V

•Electrical charge (Q)=1C

We know that

⠀ ⠀⠀

 \pink \bigstar \sf Electrical  \: energy (E)=   \red{{Potential  \: difference }\times{Electrical  \: charge}}

⠀ ⠀⠀

 \sf \: or  \:  \: \orange \bigstar E= {V}\times{Q}

⠀ ⠀⠀

 \implies \sf {2}\times{1} J

⠀ ⠀⠀

 \implies  \bf\green{2J}

⠀ ⠀⠀

•For three cells ,P.D,(V)=6V

We know that

⠀ ⠀⠀

 \sf\pink \bigstar E= {V}\times{Q}

⠀ ⠀⠀

 \implies \sf {6}\times{1} J

⠀ ⠀⠀

 \implies \blue {\bf \: 6J}

_____________________

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