# Electrical Engineering - Ohm's Law

### Exercise :: Ohm's Law - General Questions

11.

A resistance of 3.3 M is connected across a 500 V source. The resulting current is approximately

 A. 15.1 µA B. 151 µA C. 66 mA D. 660 mA

Explanation:

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12.

You are measuring the current in a circuit that is operated on an 18 V battery. The ammeter reads 40 mA. Later you notice the current has dropped to 20 mA. How much has the voltage changed?

 A. 9 V B. 900 mV C. 0 V D. 18 V

Explanation:

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13.

The current through a flashlight bulb is 40 mA and the total battery voltage is 4.5 V. The resistance of the bulb is approximately

 A. 112 B. 11.2 C. 1.2 D. 18

Explanation:

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14.

If you wish to increase the amount of current in a resistor from 120 mA to 160 mA by changing the 24 V source, what should the new voltage setting be?

 A. 8 V B. 320 V C. 3.2 V D. 32 V

Explanation:

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15.

If 24 V are applied across a resistor and there are 10.9 mA of current, the resistance is

 A. 220 k B. 22 k C. 2.2 k D. 220