Question

The filament of an electric lamp draws a current of 0.5 A, which lights for 2 hours. Calculate the charge that flows through the circuit.

Answer 1

The relationship between charge, current, and time is given by:
$Q = I \times t$
Where:
$Q$ = Charge (in Coulombs)
$I$ = Current (in Amperes)
$t$ = Time (in seconds)
Step 1: Convert time to seconds:
$t = 2 \, \text{hours} = 2 \times 3600 = 7200 \, \text{seconds}$
Step 2: Calculate charge:
$Q = 0.5 \, \text{A} \times 7200 \, \text{s}$
$Q = 3600 \, \text{C}$
Final Answer: The charge that flows through the circuit is 3600 C.

Answer 2

The relationship between charge, current, and time is given by:
$Q = I \times t$
Where:
$Q$ = Charge (in Coulombs)
$I$ = Current (in Amperes)
$t$ = Time (in seconds)
Step 1: Convert time to seconds:
$t = 2 \, \text{hours} = 2 \times 3600 = 7200 \, \text{seconds}$
Step 2: Calculate charge:
$Q = 0.5 \, \text{A} \times 7200 \, \text{s}$
$Q = 3600 \, \text{C}$
Final Answer: The charge that flows through the circuit is 3600 C.