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The total amount of electric charge that flows through a circuit is 1200┬аC in 2┬аmin. Then the amount of electric current that is drawn by the same electric circuit is:
100 A
10 A
600 A
10 A
10 A
Electric current (I) is defined as the rate of flow of electric charge (Q) through a conductor, calculated by dividing the total charge by the time taken (t).
Electric current (I) is defined as the rate of flow of electric charge (Q) through a conductor, calculated by dividing the total charge by the time taken (t).
Think of electric current like water flowing through a hose; the charge is the total volume of water passing through, and current is simply how fast that water is rushing through in one second.
Remember 'I = Q / T' as 'I Quote Time' to keep the formula sequence correct.
I=tQтАЛ тАФ where I is current in Amperes, Q is charge in Coulombs, and t is time in seconds.
1┬аmin=60┬аs тАФ time conversion factor.
According to the fundamental formula for electricity, current is the amount of charge flowing per unit time. Given that the charge is 1200┬аC and the time is 2┬аminutes, we must first convert time to standard SI units (seconds). Thus, 2┬аminutes=2├Ч60=120┬аseconds. Using the relation I=tQтАЛ, we get I=120┬аs1200┬аCтАЛ=10┬аA.
The SI unit of electric charge is the Coulomb (C).
The SI unit of electric current is the Ampere (A).
Time must always be converted to seconds to calculate current in Amperes.
A steady flow of 1┬аCoulomb per second equals 1┬аAmpere.
Simple linear relationship makes calculation straightforward.
Requires unit consistency; failure to convert minutes to seconds is a common error.
Rating electrical appliances.
Designing circuit breakers and fuses.
The official answer is 10 A.
Option A (100 A) is incorrect as it results from miscalculating the denominator.
Option C (600 A) is incorrect as it uses minutes directly without conversion.
Option D (60 A) is incorrect as it results from improper division.
B is correct тАФ Using the formula I=tQтАЛ, where Q=1200┬аC and t=120┬аs, the current is 10┬аA.
Always verify unit compatibility (time in seconds, charge in Coulombs) before performing physics calculations involving rates.
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