Question

calculate the amount of charge that would flow in 1hr. through the elements of an electric bulb drawing a current of 0.4A​

Answer 1

1hr=3600 seconds

Q=It

Q=0.4X3600

Q=1440C

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Answer 2

Given

Current = 0.4 A

Time = 1 hour

To Find

Charge

Solution

We know that

$\red{\rm \longrightarrow Q=It}$

Here

• Q = Charge
• I = Current
• t = Time

Units

• Q = Coulomb (C)
• I = Ampere (A)
• t = seconds (s)

According the question

We are asked to find charge

Therefore

We must find "Q"

Given that

Current = 0.4 A

Time = 1 hour

Hence

• I = 0.4 A
• t = 1 hr = 3600 s

Substituting the values

We get

$\green{\rm \longrightarrow Q=0.4 \times 3600 \ C}$

Therefore

$\pink{\rm \longrightarrow Q=1440 \ C}$

Hence

$\purple{\rm Charge = 1440 \ C }$