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

Answer

• Charge through the bulb = 90 C

Explanation

Given:-

• Current drawn by bulb, I = 0.4 A
• Time for which current flowed, t = 1 hr

To find:-

• Charge flowed through the elements, Q =?

Formula required:-

• Relation between Current (I), charge (Q) and time (t)

        I = Q / t

Where I is in ampere (A), Q in coulomb (C) and t in seconds (sec)

Solution:-

Converting time given in hrs into seconds

→ t = 1 hr = 60 × 60 sec

→ t = 3600 sec

Using formula to calculate Amount of charge flowing

→ I = Q / t

→ Q = I × t

→ Q = 0.4 × 3600

→ Q = 90 C

Therefore,

• A charge of 90 Coulombs flowed through the bulb.

Answer 2

Answer:-

$\small \bf \underline {Given:}$

I = 0.4A

t = 1hr = (60 × 60)s = 3600s

$\small \bf \underline{To \: find:}$

Charge flown through the elements,

Q = ?

$\small \bf \underline{Solution :}$

Q = I × t

=> Q = 0.4 × 3600

=> Q = 1400 C

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