1. Distinguish between dc and ac. 2. Which has more resistance—a thick wire or a thin wire of the same length? A short wire or a long wire? 3. What is the unit of electrical resistance? 4. How much...

1. Distinguish between dc and ac.

2. Which has more resistance—a thick wire or a thin wire of the same length? A short wire or a long wire?

3. What is the unit of electrical resistance?

4. How much current does a radio speaker with a resistance of 8 Ω draw when 12 V is impressed across it?