2. An ammeter registers 2.5 A of current in a wire that is connected to a 9.0 V

Physics

1 answer:

andreev551 [17]3 years ago

6 0

Answer:

3.6 Ω

Explanation:

Resistance: This is defined as the opposition to the flow of current in an electric circuit. The S.I unit of Resistance is Ohm's (Ω).

From the question above,

Applying Ohm's law

V = IR...................... Equation 1

Where V = Voltage, I = current registered by the ammeter, R = Resistance.

make R the subject of the equation

R = V/I............... Equation 2

Given: V = 9 V, I = 2.5 A

Substitute into equation 2

R = 9/2.5

R = 3.6 Ω

Hence the resistance of the wire = 3.6 Ω

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