Question

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

Answer 1

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):

`I=(V)/(R)`

where,

V: emf = 6.3V

R: resistance = 2Ω

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

`I=(6.3V)/(2\Omega)\approx3.2A`

The current throught the resistor is approximately 3.2A