An electrical appliance has a resistance of 4 ohms. When it is connected to a 12 V battery, the number of coulombs passing through it per second is

1.2

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0.3

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Solution

The correct option is D 3
Answer is D.
The coulomb is defined in terms of the ampere and second: $1 C = 1 A \times 1 s$ .
In this case, the resistance $4$ ohms and voltage $V = 12 V .$

According to Ohm's law,
$V = I R$
That is, $I = \frac{V}{R}$

So, $I = \frac{12}{4} = 3 A$

Hence, 3 coulomb of charge flows through the electrical appliance in 1 second.

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An electrical appliance has a resistance of 4 ohms. When it is connected to a 12 V battery, the number of coulombs passing through it per second is

The correct option is D 3Answer is D.The coulomb is defined in terms of the ampere and second: 1C=1A×1s.In this case, the resistance 4 ohms and voltage V=12V.According to Ohm's law, V=IR That is, I=VRSo, I=124=3AHence, 3 coulomb of charge flows through the electrical appliance in 1 second.