Question

please answer properly...
Class 10th (Electricity)​

Answer 1

➠ Questíon :-

➝ An electric bulb draws a current of 0.25A for 20 minutes. calculate the amount of electric charge that flows through the circuit.

➠ Gíven :-

➝ Current, I = 0.25A

➝ Time, t = 20min = 1200s

➠ To fínd :-

➝ the amount of electric charge that flows through the circuit

➠ Formula requíred :-

➙ $\boxed{ \bf I = \frac{Q}{t} }$

Where,

➝ I = current

➝ Q = charge

➝ t = time

➠ Solutíon :-

we know that,

$\longrightarrow \rm I = \frac{Q}{t}$

$\longrightarrow \rm 0.25 = \frac{Q}{1200}$

$\longrightarrow \rm Q = 0.25 \times 1200C$

$\longrightarrow \rm \boxed{ Q = 300C}$

Thus, the amount of electric charge that flows through the circuit is 300 Coulombs

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Additional information......

➤ What is current ?

• Electric current is defined as the rate at which charge flows through a surface (the cross section of a wire, for example)

◉ SI unit of current is : Ampere

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➤ What is charge ?

• Charge can mean electricity received, as in the shock you'd feel if you put your finger in a wall socket. Charge is also what you do when you use your credit card instead of cash.

◉ SI unit of charge is : Coulomb