Which statement is correct? Current causes voltage. Current flow through a circuit. Voltage flows a through a circuit. Resistance is established across a circuit. When you stretch a copper wire so that it becomes thinner, the resistance between its ends: increases decreases remains unchanged A power line with a resistance of 2 ohms has a current of 80 A current in it. The power dissipated in the line is: 40 W 320 W 160 W 12800 W
Which statement is correct? Current causes voltage. Current flow through a circuit. Voltage flows a through a circuit. Resistance is established across a circuit. When you stretch a copper wire so that it becomes thinner, the resistance between its ends: increases decreases remains unchanged A power line with a resistance of 2 ohms has a current of 80 A current in it. The power dissipated in the line is: 40 W 320 W 160 W 12800 W
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter17: Current And Resistance
Section: Chapter Questions
Problem 2CQ: A 12-V battery is connected across a device with variable resistance. As the resistance of the...
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Question
- Which statement is correct?
- Current causes voltage.
- Current flow through a circuit.
- Voltage flows a through a circuit.
- Resistance is established across a circuit.
- When you stretch a copper wire so that it becomes thinner, the resistance between its ends:
- increases
- decreases
- remains unchanged
- A power line with a resistance of 2 ohms has a current of 80 A current in it. The power dissipated in the line is:
- 40 W 320 W
- 160 W 12800 W
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