A) An automobile light has a 1.0-A current when it is connected to a 12-V battery. Determine the resistance of the light.

B) Determine the power delivered to the same automobile light.

C) What potential difference is needed to produce a current of 5.0 mA through a 2.0 ? resistor?

The resistance in first case is 12 Ω, power delivered is 12 W, and potential difference is 0.01 V

Explanation:

Given:

(A)

Current A

Voltage V

For finding the resistance,

  12Ω

(B)

For finding power delivered,

  Watt

(C)

For finding the potential difference,

    V

Therefore, the resistance in first case is 12 Ω, power delivered is 12 W, and potential difference is 0.01 V