3 . of 20 2 fc h E B. Find the current through a resistor of resistance R = 20 if the voltage across the resistor is 6 V. A. 3A C. 12 A B. 6A D. 24 A 4. A of wire connected to a 6V cell has a current of 1.5A flowing through it. What is the resistance of the wire? A. 9 ohms C. 4 ohms B. 6 ohms D. 12 ohms 5. What is the SI unit of voltage? A Ampere C. volt B. Ohm D. watt 6. What is the voltage difference across a piece of wire of resistance 100 S2 with a current of 2A? A 5 volts C. 2 volts B. 200 volts D. 500 volts In a circuit, what happens to the brightness of the bulb if more bulbs are added to it if the same numbers of dry cells are used? The bulbs become brighter B. The bulbs become dimmer C. No change in brightness D. insufficient data 8. What happens to the current through circuit when the resistance of the electric circuit is decreased? A. Decreases C. Remains the same B. Increases D. increase twice 9. Which of the following is the unit of electrical resistance? А. ampere C. ohm B. volt D. Joule 10. Which of the following electrical quantities is affected by the type of material use as conductor? A. current C. resistance B. voltage D. power


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