Part A A current of 3.2 A flows through a resistor when a potential difference o

Question

Part A

A current of 3.2 A flows through a resistor when a potential difference of 95 V is applied to it.

What is the resistance of the resistor?

Express your answer to two significant figures and include the appropriate units.

Part B

At the same temperature, two wires made of pure copper have different resistances. The same voltage is applied at the ends of each wire. The wires may differ in

Check all that apply.

A) length. B) cross-sectional area. C) resistivity. D) amount of electric current passing through them.

Explanation / Answer

potential difference = V = 95 V

Current = i = 3.2 A

Resistance of the reactor = V / i = 95 / 3.2 = 29.68 ohms

B) If resistance is different, then current will be different and cross section area and length. Resitivity will be same

Answer is

D) amount of electric current passing through them.

A) length. B) cross-sectional area.

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