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A 2 Ω resistor is connected to a battery with an emf of 6.3 V. What is the current through the resistor?Group of answer choices6.3 A3.2 A9.9 A5.3 A

Respuesta :

Use the following formula for the current I through a circuit with a resistance R and a voltage V (or in this case an emf):

[tex]I=\frac{V}{R}[/tex]

where,

V: emf = 6.3V

R: resistance = 2Ω

Replace the previous values of the parameters into the formula for I and simplify:

[tex]I=\frac{6.3V}{2\Omega}\approx3.2A[/tex]

The current throught the resistor is approximately 3.2A

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