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WAEC Physics 2015 Paper

Question : 37

Total: 50

the same charge flows through them
the same voltage appears across each capacitor
different quantities of charges flow through them in different voltages across them
different quantities of charges flows through them with the same voltage across them

Solution:

Concept:

Capacitors connected in series store the same charge, but the voltage across each can differ.

Explanation:

In a series connection, the same charging current flows through every capacitor.

Hence, each capacitor acquires the same charge

Q

For a capacitor, the voltage is

V = \frac{Q}{C}

When the capacitances

C_1, C_2, C_3, \dots

are different, the voltages

V_1, V_2, V_3, \dots

are also different.

Therefore, the same charge flows through them, while different voltages appear across each capacitor.

Answer:

Option A

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