Question

Three 2V cells are connected in series and used as a battery in a circuit.
a) what is p.d. at the terminals of the battery?
b) how many joules of electrical energy does 1C gain on passing through I) one cell ii) three cells​

Answer 1

$\huge\tt {Answer -}$

A) If three 2V cells are connected in series and used as a battery in a circuit, then Potential Difference will be -

(2 + 2 + 2)v = 6v

B) i)

Given that,

• Potential difference = 2V
• Charge moved = 1C

We know that,

$\bf {v(p.d) = \frac{w(work \: done)}{q(net \: charge)}}$

then,

$\huge\boxed {w= v \times \: q }$

work done = 2 × 1 = 2 joules

ii) Given that,

• Potential difference = 6V
• Charge moved = 1C

$\huge\boxed {w = v \times q}$

= 6 × 1 = 6 joules.

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