Question

К батарейке с ЭДС 3В подключили резистор сопротивлением 2Ом.Падение напряжения на резисторе оказалась 2В . Определите ток короткого замыкания .

Answer 1

Дано E=3 В    U=2 В    R=2 Ом   I кз- ?

E=I*(R+r)=U*(R+r)/R

r=E*R/U  -R= 3*2/2 -2=1 Ом

I кз= E/r=3/1=3 А

Answer 2

Calculation of Short Circuit Current

To determine the short circuit current, we need to use Ohm's Law, which states that the current flowing through a conductor is equal to the voltage across the conductor divided by its resistance.

In this case, we have a battery with an electromotive force (EMF) of 3V and a resistor with a resistance of 2Ω. The voltage drop across the resistor is given as 2V.

Using Ohm's Law, we can calculate the current flowing through the circuit:

I = V / R

where: - I is the current (in Amperes) - V is the voltage (in Volts) - R is the resistance (in Ohms)

Substituting the given values:

I = 2V / 2Ω = 1A

Therefore, the short circuit current in this circuit is 1 Ampere.

Please note that the calculation assumes an ideal circuit with no other components or factors affecting the current flow.